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Worksheets

cce2nd

Total questions: 150

Worksheet time: 1hrs 25mins

Name
Class
Date
1.

The 3 stages of Analog to digital conversion are

a)

Sampling, Quantization and Encoding

b)

Quantization,Sampling and Encoding

c)

Encoding,Quantization and Sampling

d)

None

2.

The conversion of decimal number (37.8125) to Binary is

a)

100101.1101

b)

11010.0101

c)

101010.1010

d)

010101.0101

3.

Find Octal number equivalent of the Decimal number (214.640625)

a)

326.51

b)

320.15

c)

326.10

d)

326.25

4.

Convert the decimal number 3509 to Hexadecimal

a)

DB5

b)

BD5

c)

5BD

d)

ABC

5.

110001.101 is equal to .......... in Decimal

a)

49.625

b)

50.625

c)

94.625

d)

49.865

6.

101.110.110.11 is equivalent to ------------ in Octal system

a)

56.66

b)

66.66

c)

65.66

d)

66.56

7.

The Hexadecimal equivalent of 1101100010011011 is

a)

D89B

b)

BD98

c)

89BD

d)

DB89

8.

Binary equivalent of the Octal number 725.63 is

a)

111010101.110011

b)

10101010.101010

c)

01010101.0101

d)

None

9.

Find Hexadecimal equivalent of the Octal number 7689.35

a)

ABCD.23

b)

DCBA.EF

c)

ABCD.EF

d)

None

10.

9B2.1A is equivent to ........... in Decimal

a)

2482.1015

b)

2345.1015

c)

2542.1015

d)

None

11.

ABCD.EF is equivalent to ............. in Binary

a)

1010101111001101.11101111

b)

ABCD.EF

c)

10101010101010.1010101010

d)

0101010101.01010101

12.

Add 1010 to 1111

a)

101001

b)

01010101

c)

0110101

d)

10101010

13.

1's Complement of 1000 is

a)

0111

b)

1000

c)

1010

d)

0101

14.

2's complement of 1000 is

a)

1000

b)

0111

c)

1010

d)

None

15.

Find the answer of (0101111 - 0101000)

a)

0000111

b)

1000101

c)

1000111

d)

None

16.

2) A __________ gate gives the output as 1 only if all the inputs signals are 1.

a)

a) AND

b)

b) OR

c)

c) EXOR

d)

d) NOR

17.

3) The boolean expression of an OR gate is _______

a)

a) A.B

b)

b) A’B+AB’

c)

c) A+B

d)

d) A’B’

18.

4) Which of the following gate will give a 0 when both of its inputs are 1?

a)

a) AND

b)

b) OR

c)

c) NAND

d)

d) EXOR

19.

The universal gate is ………………

a)

NAND gate

b)

OR gate

c)

AND gate

d)

None of the above

20.

2’s complement of binary number 0101 is

a)

1011

b)

1111

c)

1101

d)

1110

21.

For the gate in the given figure the output will be ………..

a)

0

b)

1

c)

A

d)

Ā

22.

What is the BCD representation of the binary code " 01101"

a)

10011

b)

10010

c)

11100

d)

11001

23.

The circuit of the given figure realizes the function …………

a)

Y = (A'+B')C + (DE)'

b)

Y = A'+B'+C'+D'+E'

c)

AB+C+D'E

d)

AB+C(D+E')

24.

What is the expression for the SUM output of a full adder?

a)

A⊕B⊕Cin

b)

A⊕B

c)

A⊕Cin

d)

(A+B)⊕Cin

25.

How many pin legs have for 7483 IC

a)

16

b)

14

c)

12

d)

8

26.

What is the function of the stobe pin in 74151 IC

a)

to apply Vcc

b)

to enable the IC

c)

to toggle the output

d)

to active one half of the chip

27.

3) The boolean expression of an XOR gate is _______

a)

a) A.B

b)

b) A’B+AB’

c)

c) A+B

d)

d) A’B’

28.

6) Which among the below stated boolean expressions do not obey De-Morgan's theorem ?

a)

a) X+Y = X . Y

b)

b) X.Y = X + Y

c)

c) X.Y = X.Y

d)

d) None of the above

29.

7. The number of min terms for an expression comprising of 3 variables?

a)

a) 8

b)

b) 3

c)

c) 0

d)

d) 1

30.

9. The expression Y=(A+B)(B+C)(C+A) shows the _________ operation.

a)

a) AND

b)

b) POS

c)

c) SOP

d)

d) NAND

31.

Which is the correct order of sequence for representing input values in K-map?

a)

(00,01,10,11)

b)

(00,10,01,11)

c)

(00,01,11,10)

d)

(00,10,11,01)

32.

The inputs of a NAND Gate are connected together. The resulting circuit is .............

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

None of the above

33.

The only function of NOT Gate is to ....................

a)

Stop signal

b)

Invert input signal

c)

Act as universal gate

d)

All of the above

34.

What is the binary representation of decimal no "18"

a)

10010

b)

11001

c)

10110

d)

11101

35.

What is the expression for carry output in a full adder circuit

a)

AB + ACIN + BCIN

b)

A + BCIN + BCIN

c)

AB + ACIN

d)

= AB + BCIN

36.

Signal processing technology is used in:::

a)

RADIOS

b)

MOBILE PHONES

c)

COMPUTERS

d)

IN ALL OF THE ITEMS MENTIONED

37.

Signal processing does not play a central role anymore in our modern world.

a)

TRUE

b)

FALSE

38.

Mobile phones use speech processing techniques to make voice communication between ......... possible.

a)

one person

b)

two people

c)

electric bikes

d)

two computers

39.
Is music playing from a record an analog or digital signal?
a)
Analog
b)
Digital
40.
Is a video game coded as analog or digital data?
a)
Analog
b)
Digital
41.
Is a video game coded as analog or digital data?
a)
Analog
b)
Digital
42.
The string of 1s and 0s that control a computer is called _____ code.
a)
binary
b)
dichotomous
c)
Morse
d)
two-number
43.

GPS stand for

a)

Google pro Maps

b)

Global Positioning Standards

c)

Global Positioning System

d)

Global Post System

44.

A high pass filter is

a)

a filter with a bell shaped curve around the filters' active frequency

b)

a filter with a constant level after reaching the filters active frequency

c)

a filter that cuts the high frequency component of a signal

d)

a filter that cuts the low frequency component of a signal

45.

DSP take real-world signals like a position that have been digitized and then mathematically manipulate them

a)

true

b)

false

46.

A DSP contains these key components:

a)

Data memory

b)

Compute engine

c)

Program memory

d)

All of them

47.

Signal processing technology is used in:::

a)

RADIOS

b)

MOBILE PHONES

c)

COMPUTERS

d)

IN ALL OF THE ITEMS MENTIONED

48.

Signal processing does not play a central role anymore in our modern world.

a)

TRUE

b)

FALSE

49.

Mobile phones use speech processing techniques to make voice communication between ......... possible.

a)

one person

b)

two people

c)

electric bikes

d)

two computers

50.
Is music playing from a record an analog or digital signal?
a)
Analog
b)
Digital
51.
Is a video game coded as analog or digital data?
a)
Analog
b)
Digital
52.
Is a video game coded as analog or digital data?
a)
Analog
b)
Digital
53.
The string of 1s and 0s that control a computer is called _____ code.
a)
binary
b)
dichotomous
c)
Morse
d)
two-number
54.

GPS stand for

a)

Google pro Maps

b)

Global Positioning Standards

c)

Global Positioning System

d)

Global Post System

55.

A high pass filter is

a)

a filter with a bell shaped curve around the filters' active frequency

b)

a filter with a constant level after reaching the filters active frequency

c)

a filter that cuts the high frequency component of a signal

d)

a filter that cuts the low frequency component of a signal

56.

DSP take real-world signals like a position that have been digitized and then mathematically manipulate them

a)

true

b)

false

57.

A DSP contains these key components:

a)

Data memory

b)

Compute engine

c)

Program memory

d)

All of them

58.

The reverse current in a diode is of the order of ………………

a)

kA

b)

mA

c)

uA

d)

A

59.

The forward voltage drop across a Germanium diode is about …………………

a)

3.3 V

b)

2.7 V

c)

0.7 V

d)

0.3 V

60.

A zener diode is always ………… connected.

a)

Forward

b)

Reverse

c)

Either reverse or forward

61.

In the breakdown region, a zener diode behaves like a …………… source.

a)

Constant voltage

b)

Constant Resistance

c)

Constant Current

62.

The ripple factor of a half-wave rectifier is …………………

a)

0.48

b)

1.21

c)

2

d)

2.5

63.

There is a need of transformer for ………………..

a)

Half wave rectifier

b)

Centre tap full wave rectifier

c)

Bridge full wave rectifier

d)

None of the above

64.

The PIV rating of each diode in a bridge rectifier is ……………… that of the equivalent centre-tap rectifier

a)

same

b)

twice

c)

half

d)

three times

65.

If the PIV rating of a diode is exceeded, ………………

a)

the diode conducts poorly

b)

the diode is destroyed

c)

the diode behaves like a zener diode

d)

none of the above

66.

The maximum efficiency of a half-wave rectifier is ………………..

a)

91.3

b)

66.6

c)

40.6

d)

80.2

67.

In a PN junction with no external voltage, the electric field between acceptor and donor ions is called a

a)

Peak

b)

Barrier

c)

threshold

d)

Path

68.

In a PN junction the potential barrier is due to the charges on either side of the junction, these charges are

a)

Majority Carriers

b)

Minority Carriers

c)

Both of the above

d)

Fixed Donor and Acceptor ions

69.

The capacitance of a reverse biased PN junction

a)

Increases as reverse bias is increased

b)

Decreases as reverse bias is decreased

c)

Increases as reverse bias is decreased

d)

Is insignificantly low

70.

When a diode is forward biased, the voltage across it

a)

is inversely proportional to the current

b)

is directly proportional to the current

c)

remains approximately the same

d)

is directly proportional to the source voltage

71.

Which capacitance dominates in the reverse-bias region?

a)

Depletion Capacitane

b)

Diffusion Capacitance

c)

Transition Capacitance

d)

None of the above

72.

The diffused impurities with ________ valence electrons are called donor atoms.

a)

4

b)

3

c)

5

d)

0

73.

The reverse current in a diode is of the order of ………………

a)

kA

b)

mA

c)

uA

d)

A

74.

The forward voltage drop across a Germanium diode is about …………………

a)

3.3 V

b)

2.7 V

c)

0.7 V

d)

0.3 V

75.

A zener diode is always ………… connected.

a)

Forward

b)

Reverse

c)

Either reverse or forward

76.

In the breakdown region, a zener diode behaves like a …………… source.

a)

Constant voltage

b)

Constant Resistance

c)

Constant Current

77.

The ripple factor of a half-wave rectifier is …………………

a)

0.48

b)

1.21

c)

2

d)

2.5

78.

There is a need of transformer for ………………..

a)

Half wave rectifier

b)

Centre tap full wave rectifier

c)

Bridge full wave rectifier

d)

None of the above

79.

The PIV rating of each diode in a bridge rectifier is ……………… that of the equivalent centre-tap rectifier

a)

same

b)

twice

c)

half

d)

three times

80.

If the PIV rating of a diode is exceeded, ………………

a)

the diode conducts poorly

b)

the diode is destroyed

c)

the diode behaves like a zener diode

d)

none of the above

81.

The maximum efficiency of a half-wave rectifier is ………………..

a)

91.3

b)

66.6

c)

40.6

d)

80.2

82.

In a PN junction with no external voltage, the electric field between acceptor and donor ions is called a

a)

Peak

b)

Barrier

c)

threshold

d)

Path

83.

In a PN junction the potential barrier is due to the charges on either side of the junction, these charges are

a)

Majority Carriers

b)

Minority Carriers

c)

Both of the above

d)

Fixed Donor and Acceptor ions

84.

The capacitance of a reverse biased PN junction

a)

Increases as reverse bias is increased

b)

Decreases as reverse bias is decreased

c)

Increases as reverse bias is decreased

d)

Is insignificantly low

85.

When a diode is forward biased, the voltage across it

a)

is inversely proportional to the current

b)

is directly proportional to the current

c)

remains approximately the same

d)

is directly proportional to the source voltage

86.

Which capacitance dominates in the reverse-bias region?

a)

Depletion Capacitane

b)

Diffusion Capacitance

c)

Transition Capacitance

d)

None of the above

87.

The diffused impurities with ________ valence electrons are called donor atoms.

a)

4

b)

3

c)

5

d)

0

88.

What is internal RAM memory of 8051 microcontroller?

a)

32 bytes

b)

64 bytes

c)

128 bytes

d)

256 bytes

89.

8051 series has how many 16 bit registers?

a)

2

b)

1

c)

3

d)

0

90.

Register that is used to hold the memory address of the next instruction to be executed is----------------

a)

Program Memory

b)

Program Counter

c)

Control Unit

d)

Instruction Decoder

91.

Which register is used to store the output generated by ALU?

a)

Special Function Register

b)

Timer Register

c)

Accumulator

d)

Stack Pointer

92.

When the microcontroller executes some arithmetic operations, then the flag bits of which register are affected?

a)

PSW

b)

SP

c)

DPTR

d)

PC

93.

What kind of instructions usually affect the program counter?

a)

Push & Pop

b)

Call & Jump

c)

Call & Return

d)

Return & Jump

94.

The 8051 microprocessor has ________ parallel I/O ports.

a)

2

b)

3

c)

4

d)

5

95.

On power up, the 8051 uses which RAM locations for register R0- R7

a)

00-2F

b)

00-07

c)

00-7F

d)

00-0F

96.

How many bytes of bit addressable memory is present in 8051 based microcontrollers?

a)

8 bytes

b)

32 bytes

c)

16 bytes

d)

64 bytes

97.

A microcontroller at-least should consist of:

a)

RAM, ROM, I/O ports and timers

b)

CPU, RAM, I/O ports and timers

c)

CPU, RAM, ROM, I/O ports and timers

d)

CPU, ROM, I/O ports and timers

98.

What is the file extension that is loaded in a microcontroller for executing any instruction?

a)

.doc

b)

.c

c)

.txt

d)

.hex

99.

What is the most appropriate criterion for choosing the right microcontroller of our choice?

a)

speed

b)

availability

c)

ease with the product

d)

all of the mentioned

100.

Why microcontrollers are not called general purpose computers?

a)

because they have built in RAM and ROM

b)

because they design to perform dedicated task

c)

because they are cheap

d)

because they consume low power

101.

Which architecture provides separate buses for program and data memory?

a)

Harvard architecture

b)

Von Neumann architecture

c)

None of the mentioned

d)

All of the mentioned

102.

What is the meaning of the instruction MOV A,05H?

a)

data 05H is stored in the accumulator

b)

fifth bit of accumulator is set to one

c)

address 05H is stored in the accumulator

d)

none of the mentioned

103.

Which of the following is NOT one of the key elements in the communication process?

a)
Sender
b)
Message
c)
Channel
d)
Color
104.

Communication can be defined as the process of:

a)
Eating and drinking
b)
Sleeping and dreaming
c)
Exchanging information and expressing emotions
d)
Running and jumping
105.

In the communication process, encoding refers to:

a)
The process of sending a message
b)
The process of converting information into a coded format
c)
The process of receiving a message
d)
The process of interpreting a message
106.

Which of the following is an example of non-verbal communication?

a)
Speaking on a phone
b)
Writing an email
c)
Facial expressions
d)
Writing a letter
107.

Noise in the communication process refers to:

a)
The message being sent
b)
The medium used for communication
c)
Any disturbance that affects the clarity of the message
d)
The person receiving the message
108.

The term "channel" in communication refers to:

a)
The device used for communication
b)
The language used in communication
c)
The medium through which a message is sent from one place to another
d)
The time at which communication takes place
109.

Which of the following is an example of verbal communication?

a)
Writing a letter
b)
Sending an email
c)
Using sign language
d)
Speaking to someone
110.

What is the purpose of feedback in the communication process?

a)
To ensure the message has been understood correctly
b)
To criticize the sender's message
c)
To interrupt the communication process
d)
To confuse the receiver
111.

Which of the following is an example of interpersonal communication?

a)
Talking to a wall
b)
Sending an email to a group
c)
Writing a diary
d)
Having a conversation with a friend
112.

In the communication process, decoding refers to:

a)
Sending a message
b)
Receiving a message
c)
Interpreting a message
d)
Writing a message
113.

Which of the following is a barrier to effective communication?

a)
Listening carefully
b)
Clear and concise speech
c)
Positive body language
d)
Noise and distraction
114.

Which communication model represents communication as a linear process, with a sender, message, and receiver?

a)
Transactional model
b)
Interactive model
c)
Constitutive model
d)
Linear model
115.

Which of the following is an example of feedback in communication?

a)
Speaking loudly
b)
Using complex words
c)
Responding to a message
d)
Speaking quickly
116.

Which of the following is an example of external noise in the communication process?

a)
Lack of concentration
b)
Lack of interest
c)
Physical noise like traffic, construction, etc.
d)
Misinterpretation of the message
117.

In the communication process, what does the term "context" refer to?

a)
The environment in which communication takes place
b)
The language used in communication
c)
The medium of communication
d)
The message being communicated
118.

Feedback can be _____. In inter-personal communication the receiver of

the message conveys, that he has received through smiling or frowning.

a)

Immediate / Delayed

b)

Positive / Negative

c)

Simple / Complex

d)

Profits / Losses

119.

Feedback is an intelligent understanding of the encoded message by the decoder.

Feedback may be ______.

a)

Profits / Losses

b)

Simple / Complex

c)

Positive / Negative

d)

Immediate / Delayed

120.

Feedback involves circling back of

information to a control device to adjust behavior.

a)

Immediate / Delayed

b)

Simple / Complex

c)

Profits / Losses

d)

Positive / Negative

121.

The 4th stage of Communication process

a)

Encoding

b)

Message

c)

Feedback

d)

Decoding

122.

1st stage of communication process

a)

Decoding

b)

Message

c)

Encoding

d)

Feedback

123.

A gateway software must be smart enough so that it can handle _____________.

a)

Sensors

b)

Logging

c)

Message

d)

GPS

124.

UDP and TCP are called ________ protocols:

a)

Network

b)

Transport

c)

Session

d)

Application

125.

The __________________ layer provides a security based connection:

a)

Transport

b)

Application

c)

Session

d)

Network

126.

Which one of the following is not an IoT device?

a)

Amazon echo voice controller

b)

Google Home

c)

Nest Smoke Alarm

d)

None of these

127.

What is the Arduino UNO?

a)

Software

b)

Hardware device

c)

Network

d)

Protocol

128.

Which of the following is not an application of IoT?

a)

Wearables

b)

Smart Grid

c)

Arduino

d)

Smart City

129.

Which of the following layers provides end-to-end communication in IoT?

a)

Logical layer

b)

Data link layer

c)

Transport layer

d)

Session layer

130.

Which of the following topology is used for ZigBee Smart Energy?

a)

Bus Topology

b)

Ring Topology

c)

Star Topology

d)

Any Topology

131.

Which of the following is the example of a short-range wireless network?

a)

VPN

b)

Wi-Fi

c)

Internet

d)

WWW

132.

The ________ filtering is a security measure on various wireless networks:

a)

IP

b)

OUI

c)

MAC

d)

NIC

133.

The address of the original IEEE 802 MAC comes from ___________.

a)

Http

b)

Ethernet address

c)

IP address

d)

MAC address

134.

The Buffer overrun could be reduced using:

a)

Data integrity

b)

Byte orientation

c)

Flow control

d)

Traffic control

135.

The standard length of the MAC address is

a)

16 bits

b)

32 bits

c)

48bits

d)

128 bits

136.

Identify the incorrect advantage of IoT.

a)

Reduce waste

b)

Enhanced data collection

c)

Improve customer engagement

d)

Security

137.

Who coined the term IoT?

a)

IBM

b)

Kevin Ashton

c)

Ross Ihaka

d)

Guido van Rossum

138.

The term IoT was coined in?

a)

2000

b)

1999

c)

1998

d)

2001

139.

 

Identify among the following which is not an IoT platform.

a)

Salesforce

b)

AWS

c)

Microsoft Azure

d)

Flipkart

140.

Identify among the following which is not a fundamental component of IoT system

a)

User interface

b)

Sensors

c)

Transformers

d)

Connectivity and data processing

141.

Among the following layers, identify the one which is used for wireless connection in IoT devices.

a)

Datalink layer

b)

Transport layer

c)

Network layer

d)

Application layer

142.

Identify the protocol used to link all devices in IoT,

a)

UDP

b)

TCP/IP

c)

HTTP

d)

Network

143.

My watch displays the current weather downloaded from the internet. My watch is an IOT device.

a)

True

b)

False

144.

An IOT device can most easily be differentiated from a standard computer based on

a)

Computational Performance

b)

Memory Capacity

c)

Interface with the user and the world

d)

Weight/Size

145.

IOT devices are likely to be more vulnerable to cyber attacks than standard computers

a)

True

b)

False

146.

Identify which is not part of the features of Internet of things technology.

a)

Artificial Intelligence

b)

Architecture

c)

Geo-Location

d)

Size Consideration

147.

Key component for Embedded systems?

a)

Web service

b)

Controller service

c)

Micro controller

d)

IOT

148.

 Communication and M2M are which based networks?

a)

IP & Non IP based  

b)

Non IP & IP based  

c)

 none of them

d)

both of them

149.

In IoT how many levels are there

a)

4

b)

5

c)

6

d)

7

150.

The huge numbers of devices connected to the internet of things have to communicate automatically, not via humans and this is called as _______.

a)

Bot to Bot

b)

Machine to Machine

c)

Intercloud

d)

Skynet

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