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Worksheets

Digital Electronics Quiz

Total questions: 193

Worksheet time: 2hrs 39mins

Name
Class
Date
1.

Which of the following is can be considered as Continuous Value?

a)

0.5 Volts

b)

15.017252 Volts

c)

100 Volts

d)

48 Volts

2.

Which of the following is NOT an analog device?

a)

Analog Voltmeter

b)

Cassette Tape

c)

Digital Watch

d)

Mechanical Watch

3.

Which of the following is NOT a digital device?

a)

Mobile Phone

b)

Dial Telephone

c)

Smart TV

d)

Digital Multimeter

4.

Which of the following is an analog device?

a)

IPAD

b)

Smart TV

c)

Dial Telephone

d)

Digital Multimeter

5.

Which of the following is a digital device?

a)

Analog Voltmeter

b)

Cassette Tape

c)

Mechanical Watch

d)

Digital Watch

6.

Digital signals transmitted on a single conductor (and a ground) must be transmitted in:

a)

Slow Speed

b)

Parallel

c)

Medium Speed

d)

Serial

7.

Which waveform is used to represent an Voice Signal?

a)

Sinusoidal Waveform

b)

Square Waveform

c)

Staircase Waveform

d)

Trianglular Waveform

8.

Which waveform is used to represent an Digital Signal?

a)

Sinusoidal Waveform

b)

Clock Pulse

c)

Staircase Waveform

d)

Trianglular Waveform

9.

The parallel transmission of digital data:

a)

is much slower than the serial transmission of data

b)

requires only one signal line between sender and receiver

c)

requires as many signal lines between sender and receiver as there are data bits

d)

is less expensive than the serial method of data transmission

10.

Serial format means digital signals are:

a)

sent over one conductor sequentially

b)

sent over many conductors simultaneously

c)

sent in groups of eight signals

d)

sent in binary coded decimal

11.

Which format can send several bits of information faster?

a)

Parallel

b)

Serial

c)

Both are the same

d)

Can't tell

12.

What is one relative DISADVANTAGE of Serial Data Transfer?

a)

It requires too many conductors

b)

Its interconnect system is complex

c)

Slow Speed of Operation

d)

It can only be used in long distances

13.

Which of the following statement is the CORRECT?

a)

Analog System is a Flexible System

b)

Digital System is a Flexible System

c)

Digital System is a Fixed System

d)

Analog System is a Programmable System

14.

Which of the following is the ADVANTAGE of an Analog System?

a)

More Power Consumption

b)

More Prone to Distortion

c)

Short Distance Communication

d)

Cheaper System

15.

Which of the following is the DISADVANTAGE of Digital System?

a)

High Bandwidth

b)

Less Prone to Distortion

c)

Long Distance Communication

d)

Less Power Consumption

16.

Which of the following statement/s is/are the CORRECT in case of an Analog System?

a)

Cheaper System

b)

Less Bandwidth

c)

Both a & b

d)

More Power Consumption

17.

Which of the following statement is the CORRECT in case of DIGITAL System?

a)

Cheaper System

b)

Low Power Consumption

c)

Short Distance Communication

d)

More Prone to Distortion

18.

Which of the following statement/s is/are the CORRECT in case of DIGITAL System?

a)

Cheaper System

b)

Low Power Consumption

c)

Long Distance Communication

d)

Both b & c

19.

Which of the following ranges is related to HIGH LEVEL range?

a)

V L (min) to V L (max)

b)

V L (min) to V H (max)

c)

V L (max) to V H (min)

d)

V H (min) to V H (max)

20.

Which of the following ranges is related to UNACCEPTABLE VOLTAGE LEVEL range?

a)

V L (min) to V L (max)

b)

V L (max) to V H (min)

c)

V L (min) to V H (max)

d)

V H (min) to V H (max)

21.

Which of the following ranges is related to LOW LEVEL range?

a)

V L (min) to V L (max)

b)

V L (min) to V H (max)

c)

V L (max) to V H (min)

d)

V H (min) to V H (max)

22.

In a positive logic system, ________.

a)

only HIGHs are present

b)

only LOWs are present

c)

a LOW = 1, a HIGH = 0

d)

a HIGH = 1, a LOW = 0

23.

In a negative logic system, ________.

a)

a LOW = 1, a HIGH = 0

b)

a HIGH = 1, a LOW = 0

c)

only HIGHs are present

d)

only LOWs are present

24.

The rise time is the time it takes a pulse to go from ________.

a)

the base line to the maximum HIGH voltage

b)

the base line to 90% of the pulse amplitude

c)

10% of the pulse amplitude to the maximum HIGH voltage

d)

10% of the pulse amplitude to 90% of the pulse amplitude

25.

The fall time is the time it takes a pulse to go from ________.

a)

the maximum HIGH voltage to the base line

b)

90% of the pulse amplitude to 10% of the pulse amplitude

c)

90% of the pulse amplitude to the maximum LOW voltage

d)

10% of the pulse amplitude to the base line

26.

A periodic digital waveform has a pulse width (tw) of 6 ms and a period (T) of 18 ms. The duty cycle is ________.

a)

0.033

b)

0.333

c)

0.060

d)

0.18

27.

The frequency of a pulse train is 2 kHz. The pulse period is ________.

a)

5 ms

b)

50 ms

c)

500 μs

d)

2 μs

28.

The magnitude of the signal waveform from 0 Volt level is defined as ____________.

a)

Amplitude

b)

Time Period

c)

Frequency

d)

Duty Cycle

29.

The length of time that the waveform takes to repeat itself from start to finish is defined as ____________.

a)

Amplitude

b)

Time Period

c)

Frequency

d)

Duty Cycle

30.

The total no. of occurrences in one cycle of square wave is defined as ____________.

a)

Amplitude

b)

Time Period

c)

Frequency

d)

Duty Cycle

31.

The time the signal is at 5V or logic high level is known as ________.

a)

Duty Cycle

b)

Rise Edge

c)

Off Time

d)

On Time

32.

The time the signal is at 0V or logic low level is known as ________.

a)

Duty Cycle

b)

Rise Edge

c)

Off Time

d)

On Time

33.

A (0) to (1) transition of the signal is termed as _______.

a)

Fall Edge

b)

Rise Edge

c)

Off Time

d)

On Time

34.

A (1) to (0) transition of the signal is termed as _______.

a)

Fall Edge

b)

Rise Edge

c)

Off Time

d)

On Time

35.

The ratio of ON time to the total time period of signal is known as ______________.

a)

Duty Cycle

b)

Fall Edge

c)

Rise Edge

d)

On Time

36.

The waveform that repeats itself at a fixed intervals, with a period (T) is ___________.

a)

Positive Edge Pulse

b)

Negative Edge Pulse

c)

Periodic Pulse

d)

Non-Periodic Pulse

37.

The waveform that DOES NOT repeats itself at a fixed intervals is ___________.

a)

Positive Edge Pulse

b)

Negative Edge Pulse

c)

Periodic Pulse

d)

Non-Periodic Pulse

38.

Which of following application of transistor is related to the field of Digital Electronics?

a)

Multi-stage Amplifier

b)

Switch

c)

Oscillator

d)

Modulator

39.

In which of the following two regions BJT will operate, when it is used as SWITCH?

a)

Saturation & Cut-off Regions

b)

Saturation & Active Regions

c)

Active & Cut-off Regions

d)

Active & Avalanche Breakdown Regions

40.

When BJT is in ON mode, it operates as ________ switch.

a)

closed

b)

open

c)

DPST

d)

DPDT

41.

When BJT is in OFF mode, it operates as ________ switch.

a)

closed

b)

open

c)

DPST

d)

DPDT

42.

When BJT is fully-OFF, it operates in _________ region.

a)

Active

b)

Saturation

c)

Cut-off

d)

Avalanche Breakdown

43.

When BJT is fully-ON, it operates in _________ region.

a)

Active

b)

Saturation

c)

Cut-off

d)

Avalanche Breakdown

44.

Which of the following component is used in first generation computers?

a)

Vacuum Tube

b)

Transistor

c)

Integrated Chip

d)

Very Large Scale Integration Chip

45.

Which of the following component is used in second generation computers?

a)

Vacuum Tube

b)

Transistor

c)

Integrated Chip

d)

Very Large Scale Integration Chip

46.

Which of the following integration level is used in Logic Gates & Op-Amp ICs?

a)

SSI

b)

MSI

c)

LSI

d)

VLSI

47.

Which of the following integration level is used in Adder, Multiplexer, Counter & Shift Register ICs?

a)

SSI

b)

MSI

c)

LSI

d)

VLSI

48.

Which of the following integration level is used in DAC/ADC & 8-Bit Microprocessor ICs?

a)

SSI

b)

MSI

c)

LSI

d)

VLSI

49.

Which of the following integration level is used in DSP ICs & Complex PLDs?

a)

SSI

b)

MSI

c)

LSI

d)

VLSI

50.

Which of the following integration level is used in 8 Mb Memory IC & Image Processor?

a)

LSI

b)

VLSI

c)

ULSI

d)

GSI

51.

Which of the following integration level is used in 64 Mb Memory IC, Multiprocessor & Advanced Processors?

a)

LSI

b)

VLSI

c)

ULSI

d)

GSI

52.

In a number representation, which of the following term indicates the symbols used to represent a number?

a)

Digit of a Number

b)

Position of a Digit

c)

Base of a Number

d)

Index of a Number

53.

In a number representation, which of the following term indicates the value of a digit depending on its place, in the number?

a)

Digit of a Number

b)

Position of a Digit

c)

Base of a Number

d)

Index of a Number

54.

In a number representation, which of the following term indicates the total no. numerals available in a number system.

a)

Digit of a Number

b)

Position of a Digit

c)

Base of a Number

d)

Index of a Number

55.

In a number representation, which of the following term indicates how many times to use the number in a multiplication?

a)

Digit of a Number

b)

Position of a Digit

c)

Base of a Number

d)

Index of a Number

56.

Which of the following number system consists of 0 to 9 numerals?

a)

Binary Number System

b)

Decimal Number System

c)

Hexadecimal Number System

d)

Octal Number System

57.

How many no. of numerals are used in Decimal Number System?

a)

2

b)

8

c)

10

d)

16

58.

Which of the following term indicates base 2 number system?

a)

Bi

b)

Deca

c)

Hexa

d)

Octa

59.

How many no. of numerals are used in Binary Number System?

a)

2

b)

8

c)

10

d)

16

60.

Which of the following number system consists of ONLY 0s & 1s?

a)

Binary Number System

b)

Decimal Number System

c)

Hexadecimal Number System

d)

Octal Number System

61.

Which of the following term indicates the “smallest unit” of binary information?

a)

Bit

b)

Byte

c)

Nibble

d)

Word

62.

Which of the following term indicates the “group of 4 bits” in a binary information?

a)

Bit

b)

Byte

c)

Nibble

d)

Word

63.

Which of the following term indicates the “group of 8 bits” in a binary information?

a)

Bit

b)

Byte

c)

Nibble

d)

Word

64.

Which of the following term indicates the “group of 16 bits” in a binary information?

a)

Byte

b)

Double Word

c)

Nibble

d)

Word

65.

Which of the following term indicates the “group of 32 bits” in a binary information?

a)

Byte

b)

Double Word

c)

Nibble

d)

Word

66.

How many no. of nibbles are there in the given byte of data (1011 0101)

a)

2

b)

?

c)

two

d)

one

e)

three

67.

How many no. of nibbles & no. of bytes are there in the given word of data (1110 0110 1011 0101)

a)

two bytes

b)

?

c)

2

d)

two nibbles

e)

two nibbles

68.

How many no. of nibbles, no. of bytes & no. of words are there in the given word of data (1110 0110 1011 0101 0001 0011 1000 0101)

a)

two nibbles

b)

2

c)

?

d)

two words

e)

two bytes

69.

Which of the following term indicates base 8 number system?

a)

Bi

b)

Deca

c)

Hexa

d)

Octa

70.

Which of the following number system consists of 0 to 7 numerals?

a)

Binary Number System

b)

Decimal Number System

c)

Hexadecimal Number System

d)

Octal Number System

71.

How many no. of numerals are used in Octal Number System?

a)

2

b)

8

c)

10

d)

16

72.

Which of the following number system uses both numerals and alphabets?

a)

Binary Number System

b)

Decimal Number System

c)

Hexadecimal Number System

d)

Octal Number System

73.

How many total no. of symbols are used in Hexadecimal Number System?

a)

2

b)

8

c)

10

d)

16

74.

How many no. of numbers are used in Hexadecimal Number System?

a)

2

b)

8

c)

9

d)

10

75.

How many no. of alphabets are used in Hexadecimal Number System?

a)

4

b)

6

c)

8

d)

9

76.

The process used to convert a Decimal Number to Any Base Number is _______________.

a)

Grouping of 3 Bits

b)

Grouping of 4 Bits

c)

Successive Division

d)

Weighted Multiplication

77.

The process used to convert any Base Number to a Decimal Number is _______________.

a)

Grouping of 3 Bits

b)

Grouping of 4 Bits

c)

Successive Division

d)

Weighted Multiplication

78.

To convert a given binary number to an octal number, the binary number is grouped in ________ bits.

a)

2

b)

3

c)

4

d)

8

79.

To convert a given binary number to a hexadecimal number, the binary number is grouped in _______ bits.

a)

2

b)

3

c)

4

d)

8

80.

Which of the following is not a positional number system?

a)

Binary Number System

b)

Decimal Number System

c)

Octal Number System

d)

Roman Number System

81.

The binary equivalent of the decimal number (85)10 is __________.

a)

1001001010101010111

b)

1010101

82.

The octal equivalent of the decimal number (85)10 is __________.

a)

125

b)

215

c)

225

d)

315

83.

The hexadecimal equivalent of the decimal number (241)10 is __________.

a)

(F1)16

b)

(D3)16

c)

(E7)16

d)

(10A)16

84.

The binary equivalent of a decimal number (12.125)10 is ____________.

a)

1100.0111

b)

1100.001

c)

1010.11

85.

The octal equivalent of a decimal number (35.75)10 is ____________.

a)

(42.3)8

b)

(41.2)8

c)

(43.6)8

d)

(44.4)8

86.

The hexadecimal equivalent of a decimal number (22.75)10 is ____________.

a)

(F.B6)16

b)

(10.D)16

c)

(12.A)16

d)

(16.C)16

87.

The decimal equivalent of a binary number (1010.011)2 is ____________.

a)

(10.365)10

b)

(10.375)10

c)

(11.365)10

d)

(11.375)10

88.

The octal equivalent of a binary number (1100101011.1101)2 is ____________.

a)

(1534.51)8

b)

(1453.64)8

c)

(1354.51)8

d)

(1275.75)8

89.

The hexadecimal equivalent of a binary number (100101101011.111011)2 is ____________.

a)

(96B.EC)16

b)

(9B6.AC)16

c)

(A4D.EF)16

d)

(87A.DB)16

90.

The decimal equivalent of a octal number (725.25)8 is ____________.

a)

(387.36)10

b)

(469.2)10

c)

(514.23)10

d)

(258.24)10

91.

The binary equivalent of a octal number (725.25)8 is ____________.

a)

111 011 100.011 100

b)

110 001 100.001 110

c)

101 010 111.010 101

92.

The hexadecimal equivalent of an octal number (725.25)8 is ____________.

a)

(1A6.53)16

b)

(2BC.82)16

c)

(1D5.54)16

d)

(2F3.61)16

93.

The decimal equivalent of a hexadecimal number (AA)16 is ____________.

a)

(162)10

b)

(170)10

c)

(185)10

d)

(210)10

94.

The binary equivalent of a hexadecimal number (D7B.56)16 is ____________.

a)

1101 0111 1011.0101

b)

0110 1010 0110 1100.0101

c)

1100 0111 1010.0100 0111

d)

1110 1000 1011.0111 0100

95.

The octal equivalent of a hexadecimal number (1E.53)16 is ____________.

a)

(35.684)8

b)

(34.340)8

c)

(35.599)8

d)

(36.246)8

96.

Which of the following term is NOT associated with addition operation?

a)

Augend

b)

Addend

c)

Borrow

d)

Carry

97.

Which of the following term is NOT associated with subtraction operation?

a)

Borrow

b)

Minuend

c)

Subtrahend

d)

Sum

98.

Perform the decimal addition: (579.271)10 + (68.85)10

a)

(598.421)10

b)

(654.213)10

c)

(648.121)10

d)

(681.162)10

99.

Perform the decimal numbers subtraction: (579.271)10 - (68.85)10

a)

(409.342)10

b)

(410.421)10

c)

(509.342)10

d)

(510.421)10

100.

The binary addition of 1 + 1 + 1 + 1 = ________.

a)

(0001)2

b)

(0100)2

c)

(1001)2

d)

(1111)2

101.

The binary addition of 1 + 1 + 1 = _________.

a)

Sum = 1 & Carry = 1

b)

Sum = 1 & Carry = 0

c)

Sum = 0 & Carry = 1

d)

Sum = 0 & Carry = 0

102.

10s complement of a (778) is ___________.

4 lines
103.

2s complement is also called as Radix complement of a ___________ number.

a)

Binary

b)

Decimal

c)

Hexadecimal

d)

Octal

104.

1s complement is also called as Diminished Radix complement of a ___________ number.

a)

Binary

b)

Decimal

c)

Hexadecimal

d)

Octal

105.

1’s complement can be easily obtained by using _________.

a)

Comparator

b)

Inverter

c)

Adder

d)

Subtractor

106.

1s complement of a (1)2 is ___________.

a)

(0)2

b)

(1)2

c)

(10)2

d)

(11)2

107.

1s complement of a (101101)2 is ___________.

a)

(011010)2

b)

(010010)2

c)

(010110)2

d)

(001001)2

108.

1s complement of a (1011.0110)2 is ___________.

a)

(0111.1101)2

b)

(0101.0101)2

c)

(0110.1010)2

d)

(0100.1001)2

109.

2s complement of a (10000)2 is ___________.

a)

(01111)2

b)

(01100)2

c)

(10000)2

d)

(01101)2

110.

2s complement of a (11010010.100)2 is ___________.

a)

(00101110.011)2

b)

(01101001.001)2

c)

(00101101.100)2

d)

(01110101.110)2

111.

The two complement in binary system is useful for expressing

a)

Positive Numbers

b)

Negative Numbers

c)

Both Positive & Negative Numbers

d)

None of the above

112.

Identify the type of a binary code in which EACH DIGIT of a decimal number is represented by a separate group of 4 bits.

a)

BCD Code

b)

GRAY Code

c)

EBCDIC Code

d)

ASCII Code

113.

Which of the following binary code is a Weighted Binary Code?

a)

ASCII Code

b)

BCD Code

c)

EBCDIC Code

d)

GRAY Code

114.

Binary coded decimal is a combination of __________ bits.

a)

two

b)

three

c)

four

d)

five

115.

What is alternate name for 8421 Binary Code?

a)

ASCII Code

b)

BCD Code

c)

EBCDIC Code

d)

GRAY Code

116.

Which of the following is an invalid BCD code?

a)

(0110)2

b)

(0011)2

c)

(1001)2

d)

(1101)2

117.

Represent decimal number (10) in its equivalent BCD form.

a)

(1010)2

b)

(0001 0000)2

c)

(1010 0000)2

d)

(0011 1010)2

118.

Identify the type of a binary code in which EACH successive code differs from its preceding (previous) code by a SINGLE BIT ONLY.

a)

BCD Code

b)

GRAY Code

c)

EBCDIC Code

d)

ASCII Code

119.

Which of the following binary code/s is/are Non-Weighted Binary Code/s?

a)

BCD Code

b)

GRAY Code

c)

EBCDIC Code

d)

Both b & c

120.

Find out equivalent Excess-3 Code for the given Decimal number (6).

a)

(0110)2

b)

(0011)2

c)

(1001)2

d)

(1101)2

121.

How many individual bits are used by an ASCII code to represent any given character?

a)

3

b)

4

c)

7

d)

8

122.

How many individual bits are used by an EBCDIC code to represent any given character?

a)

3

b)

4

c)

7

d)

8

123.

Which of the following circuit is used to generate Parity Bit?

a)

Error Detector Circuit

b)

Parity Generator Circuit

c)

Error Correction Circuit

d)

Parity Checker Circuit

124.

Which of the following circuit is used to check Parity Bit generated is correct or not?

a)

Error Detector Circuit

b)

Parity Generator Circuit

c)

Error Correction Circuit

d)

Parity Checker Circuit

125.

A given digital binary number has even parity ______________.

a)

if it has even no. of 1s

b)

if it has even no. of 0s

c)

if it has odd no. of 1s

d)

if it has odd no. of 0s

126.

When using even parity, where is the parity bit placed?

a)

Before the MSB

b)

After the LSB

c)

In the Parity Word

d)

After the Odd Parity Bit

127.

Convert the Gray code 1011 to binary.

a)

1011

b)

1010

c)

1101

d)

1001

128.

Which of the following parameter is used to represent the symbol of logic gate?

a)

Boolean Expression

b)

Logic Symbol

c)

Timing Diagram

d)

Truth Table

129.

Which of the following parameter will give the possible input-output combinations of a logic gate?

a)

Boolean Expression

b)

Logic Symbol

c)

Timing Diagram

d)

Truth Table

130.

Which of the following parameter is used to represent equation or expression of logic gate?

a)

Boolean Expression

b)

Logic Symbol

c)

Timing Diagram

d)

Truth Table

131.

Which of the following parameter is used to represent graphical representation of input and output signals of logic gate wrt time?

a)

Boolean Expression

b)

Logic Symbol

c)

Timing Diagram

d)

Truth Table

132.

When used with an Logic Gate IC, what does the term "QUAD" indicate?

a)

IC with 2 logic gates

b)

IC with 4 logic gates

c)

IC with 6 logic gates

d)

IC with 8 logic gates

133.

Which of the following logic gate is NOT a type of basic gate?

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NOR Gate

134.

Which of the following logic gate is an Universal gate?

a)

AND Gate

b)

OR Gate

c)

NAND Gate

d)

EX-OR Gate

135.

Which of the following type of logic gate performs basic logic functions?

a)

Basic Gates

b)

Exclusive Gates

c)

Universal Gates

d)

None of the above

136.

Which of the following logic gate performs complementation?

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

137.

Which of the following logic gate performs logical addition?

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

138.

Which of the following logic gate performs logical multiplication?

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

139.

Identify the logic gate, where the normally open switches are connected in parallel as inputs and Lamp as output?

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

140.

Identify the logic gate, where the normally open switches are connected in series as inputs and Lamp as output?

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

141.

If either of inputs A or B of a logic gate is true, then output Q is true. Identify the logic gate.

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

142.

If both of inputs A or B of a logic gate is true, then output Q is true. Identify the logic gate.

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

143.

Which of the following type of logic gate performs function of any logic gate or any Boolean expression?

a)

Basic Gates

b)

Exclusive Gates

c)

Universal Gates

d)

None of the above

144.

Which of the following logic gate performs Complement of OR Operation?

a)

AND Gate

b)

NOR Gate

c)

NOT Gate

d)

NAND Gate

145.

Which of the following logic gate performs Complement of AND Operation?

a)

AND Gate

b)

NOR Gate

c)

NOT Gate

d)

NAND Gate

146.

If either of inputs A or B are LOW, then output Q is HIGH. Identify the logic gate.

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

147.

If and ONLY if both the inputs A and B are LOW, then output Q is HIGH. Identify the logic gate.

a)

NOR Gate

b)

OR Gate

c)

NOT Gate

d)

NAND Gate

148.

Which of the following type of logic gate performs special logic functions?

a)

Basic Gates

b)

Exclusive Gates

c)

Universal Gates

d)

None of the above

149.

If both the inputs A and B are at DIFFERENT voltage levels, then ouptut Q is true. Identify the logic gate.

a)

OR Gate

b)

EX-OR Gate

c)

NOR Gate

d)

NAND Gate

150.

If both the inputs A and B are at SAME voltage levels, then ouptut Q is true. Identify the logic gate.

a)

OR Gate

b)

EX-OR Gate

c)

NOR Gate

d)

EX-NOR Gate

151.

Identify the logic gate which is suitable for bit comparison.

a)

Two input OR Gate

b)

Two input EX-OR Gate

c)

Two input NOR Gate

d)

Two input EX-NOR Gate

152.

An EX-OR gate output is HIGH if _______________________.

a)

it has ODD no. of 1s in the inputs

b)

it has EVEN no. of 1s in the inputs

c)

it has ALL inputs are 0s

d)

it has ALL inputs are 1s

153.

This parameter is ___________.

a)

speed-power product

b)

propagation delay

c)

tPHL

d)

propagation delay, tPLH

e)

pulse width

154.

Identify the performance parameter of a logic gate which defines the time needed for an output to change from the result of an input change.

a)

speed-power product

b)

propagation delay

c)

power dissipation

d)

noise margin

155.

When will the output of logic gate experience a Worst Propagation Delay?

a)

Logic gate has MIN DELAY

b)

Logic gate has AVE DELAY

c)

Logic gate has MAX DELAY

d)

Logic gate has NO DELAY

156.

When will the output of logic gate experience a FASTEST CHANGE, when an input change is there?

a)

Logic gate has MIN DELAY

b)

Logic gate has AVE DELAY

c)

Logic gate has MAX DELAY

d)

None of the above

157.

When will the output of logic gate experience a Typical Propagation Delay?

a)

Logic gate has MIN DELAY

b)

Logic gate has AVE DELAY

c)

Logic gate has MAX DELAY

d)

Logic gate has NO DELAY

158.

Logic Gate A has tPLH = tPHL = 6 ns. Logic Gate B has tPLH = tPHL = 10 ns. Which logic gate can be operated at a higher frequency?

a)

Logic Gate A

b)

Logic Gate B

c)

Neither Logic Gate A nor Logic Gate B

d)

Either Logic Gate A or Logic Gate B

159.

Identify the performance parameter of a logic gate which defines the no. of inputs to the logic gate.

a)

Rise Time

b)

Fan In

c)

Fall Time

d)

Fan Out

160.

Identify the performance parameter of a logic gate which defines the no. of inputs which can be driven by a SINGLE Logic Gate Output.

a)

Rise Time

b)

Fan In

c)

Fall Time

d)

Fan Out

161.

Identify the performance parameter of a logic gate which defines the PRODUCT of dc supply voltage (Vcc) & the average supply current (Iave).

a)

Rise Time

b)

Fall Time

c)

Propagation Delay

d)

Power Dissipation

162.

If a logic gate operates on a dc supply voltage of +5 V and draws an average current of 4 mA, what is its power dissipation?

a)

15 mA

b)

20 mA

c)

25 mA

d)

30 mA

163.

Identify the performance parameter of a logic gate which defines the product of propagation delay & average power dissipation.

a)

Rise Time

b)

Fall Time

c)

Speed Power Product

d)

Noise Margin

164.

Identify the performance parameter of a logic gate which is also termed as Figure of Merit.

a)

Rise Time

b)

Fall Time

c)

Speed Power Product

d)

Noise Margin

165.

Identify the unit of Speed-Power Product (SPP).

a)

seconds

b)

Watts

c)

Hertz

d)

Joules

166.

If the propagation delay of a gate is 15 ns and its Speed Power Product (SPP) is 150 pJ, what is its average power dissipation?

a)

1 mW

b)

10 mW

c)

100 mW

d)

10 W

167.

A certain gate has a propagation delay time of 6 ns and a power dissipation of 3 mW. Determine the speed-power product?

a)

9 pJ

b)

3 pJ

c)

18 pJ

d)

2 pJ

168.

Identify the performance parameter of a logic gate which defines the amount of noise that the logic gate can withstand while still functioning properly.

a)

Power Dissipation

b)

Propagation Delay

c)

Time

d)

Noise Margin

169.

Identify the term of Boolean Algebra which is used to represent an action, a condition, or data.

a)

Complement

b)

Literal

c)

Variable

d)

None of the above

170.

A variable is a symbol in Boolean algebra used to represent

a)

Data

b)

A Condition

c)

An Action

d)

All of the Above

171.

Identify the term of Boolean Algebra which will give the inverse of variable.

a)

Complement

b)

Literal

c)

Variable

d)

None of the above

172.

Identify the term of Boolean Algebra which will represent a variable or the complement of the variable.

a)

Complement

b)

Literal

c)

Variable

d)

None of the above

173.

The Boolean expression A + B + C is

a)

complement

b)

literal term

c)

product term

d)

sum term

174.

The Boolean expression A . B . C is

a)

complement

b)

literal term

c)

product term

d)

sum term

175.

Determine the values of A, B, and C that make the sum term A' + B' + C = 0.

a)

A = 0 ; B = 0 ; C = 0

b)

A = 1 ; B = 1 ; C = 0

c)

A = 1 ; B = 0 ; C = 1

d)

A = 1 ; B = 1 ; C = 1

176.

Determine the values of A, B, and C that make the product term AB'C equal to 1.

a)

A = 0 ; B = 0 ; C = 0

b)

A = 1 ; B = 1 ; C = 0

c)

A = 1 ; B = 0 ; C = 1

d)

A = 1 ; B = 1 ; C = 1

177.

Identify the boolean expression for associative law of addition from the following.

a)

A + B = B + A

b)

A = A + A

c)

(A + B) + C = A + (B + C )

d)

A + 0 = A

178.

Identify the boolean expression for commutative law of multiplication from the following.

a)

A . B = B . A

b)

A = A . A

c)

(A . B) . C = A . (B . C )

d)

A . 0 = 0

179.

Identify the boolean expression for distributive law.

a)

A(B + C) = AB + AC

b)

A(BC) = ABC

c)

A(A + 1) = A

d)

A + AB = A

180.

Which one of the following is not a valid rule of Boolean algebra?

a)

A + 1 = 1

b)

A = A'

c)

AA = A

d)

AA + 0 = A

181.

Which of the following rules states that if one input of an AND gate is always 1, the output is equal to the other input?

a)

A + 1 = 1

b)

A + A = A

c)

A . A = A

d)

A . 1 = A

182.

According to DeMorgan’s theorems, the complement of a product of variables is equal to the complement of the

a)

sum

b)

the sum of the complements

c)

the product of the complements

d)

None of the above

183.

An example of a canonical SOP expression is

a)

A'B + AB'C + ABD'

b)

AB'C + AC'D

c)

A'B + AB' + AB

d)

AB'CD' + A'B + A'

184.

An example of a standard SOP expression is

a)

AB+C

b)

ABC + A'BC

c)

A'B'CD + AB'C'D'

d)

(A+B)(A'+B')

185.

The Boolean expression X = (A + B)(C + D) represents

a)

two ORs ANDed together

b)

two ANDs ORed together

c)

a 4-input AND gate

d)

a 4-input OR gate

186.

A 2-variable Karnaugh map has

a)

4 cells

b)

8 cells

c)

16 cells

d)

32 cells

187.

A 2-variable Karnaugh map has

a)

4 singles, 4 pairs, 1 quad, 0 Octets

b)

2 singles, 2 pairs, 1 quad, 0 Octets

c)

2 singles, 4 pairs, 1 quad, 0 Octets

d)

4 singles, 2 pairs, 1 quad, 0 Octets

188.

A 3-variable Karnaugh map has

a)

4 cells

b)

8 cells

c)

16 cells

d)

32 cells

189.

A 3-variable Karnaugh map has

a)

8 singles, 8 pairs, 2 quad, 0 Octets

b)

8 singles, 4 pairs, 2 quad, 0 Octets

c)

8 singles, 8 pairs, 4 quad, 1 Octets

d)

8 singles, 12 pairs, 6 quad, 1 Octets

190.

A 4-variable Karnaugh map has

a)

4 cells

b)

8 cells

c)

16 cells

d)

32 cells

191.

A 4-variable Karnaugh map has

a)

16 singles, 12 pairs, 16 quad, 2 Octets

b)

16 singles, 16 pairs, 18 quad, 4 Octets

c)

16 singles, 32 pairs, 24 quad, 8 Octets

d)

16 singles, 12 pairs, 6 quad, 2 Octets

192.

In a 4-variable SoP Karnaugh map, a 2-variable product term is obtained by

a)

a QUAD of adjacent 1s

b)

an OCTET of adjacent 1s

c)

a PAIR of adjacent 1s

d)

a QUAD of adjacent 0s

193.

In a 4-variable SoP Karnaugh map, a 3-variable product term is obtained by

a)

a QUAD of adjacent 1s

b)

an OCTET of adjacent 1s

c)

a PAIR of adjacent 1s

d)

a QUAD of adjacent 0s