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Worksheets

ACP DE Spring 2019

Total questions: 83

Worksheet time: 58mins

Name
Class
Date
1.
In SI units, which prefixes are used for values smaller than a whole value (1)?
a)
K, m, μ
b)
m, n, μ
c)
c, K, m 
d)
M, μ, n
2.
After reading a digital meter, a technician obtained a reading of 0.0073 V. Which of the following numbers is the proper SI notation for that number?
a)
0.0073 mV
b)
7.3 mV
c)
0.0073 μV
d)
a.  7.3 kV
3.
What is the decimal equivalent to the binary number 0101102?
a)
23 10
b)
22 10
c)
13 10
d)
3 10
4.
The truth-table shown above represents which of the gates? 
a)
a
b)
b
c)
d
d)
e
5.
The gate shown above is represented by which of the  truth tables?
a)
a
b)
b
c)
c
d)
d
6.
Which of the above is a rule of Boolean algebra?
a)
a
b)
b
c)
c
d)
d
7.
  Which of the above expressions is an example of the Associative Law of Boolean Algebra?
a)
a
b)
b
c)
c
d)
d
8.
Which of the above logic expressions is the un-simplified sum-of-products equation for the truth table shown to the right:
a)
a
b)
b
c)
c
d)
d
9.
Which of the above un-simplified Boolean expressions represents the logic circuit shown above?
a)
a
b)
b
c)
c
d)
d
10.
1.  Which of the above logic expressions is a correct DeMorgan’s Identity?
a)
a
b)
b
c)
c
d)
d
11.
1.  01011101 (2) = ___________ (10)
a)
186 (10)
b)
135 (10)
c)
93 (10)
d)
5D (10)
12.
Calculate the current [A] in the first resistor attached to the 110 [V] battery in the series circuit shown to the right:
a)
0.333 A
b)
1.1 A
c)
3.0 A
d)
330 A
13.
Calculate the total resistance [Ω] of the parallel circuit shown above.
a)
0.07 Ω
b)
14.28 Ω
c)
100 Ω
d)
175 Ω
14.
How much voltage is on the 2nd resistor (R2) in the parallel circuit shown above?
a)
2.57 V
b)
3 V
c)
9 V
d)
50 V
15.
Three identical 9[V] Energizer batteries are hooked up to three different circuits as shown above. Which of the following statements is true?
a)
a.  The battery in circuit X will die faster.
b)
The battery in circuit Y will die faster
c)
a.  All batteries will die at the same time.
d)
It cannot be determined which battery dies faster.
16.
What gate is this table for?
a)
AND
b)
OR
c)
NOT
d)
NOR
17.
AND  Gate:
If A is OFF but B is ON, the output would be...
a)

ON

b)

OFF

18.
NOT Gate:
If A is OFF, the output would be...
a)
ON
b)
OFF
19.
Which logic gate is this?
a)
NAND
b)
NOR
c)
XOR
d)
NXOR
20.
what is a output
a)
y=0
b)
y=1
21.
what is a output
a)
0
b)
1
22.
What two digits are used in binary?
a)
0 & 2 
b)
1 & 2
c)
0 & 1
d)
1 & 1
23.
Which of these is the correct sequence for the place values for binary numbers?
a)
1, 2, 4, 8, 16, 32, 64, 128
b)
1, 2, 4, 6, 8, 10, 12, 14, 16
c)
1, 2, 3, 4, 5, 6, 7, 8
d)
0, 1
24.
The picture shows an electrical circuit. This circuit is a series circuit because: 
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
25.
The energy within a battery is called _____________.
a)
voltage
b)
 circuit
c)
filament
d)
conductor
26.
In a parallel circuit if one light bulb goes OUT; then they ALL go out. TRUE OR FALSE?
a)
TRUE
b)
FALSE
27.
Insulator is?
a)
material that current can pass through easily
b)
material that current cannot pass through easily
c)
magnet
d)
static electricity
28.
If a circuit is incomplete, or broken, it is a(n) ________ circuit. 
a)
closed
b)
series
c)
bad
d)
open
29.
Metals such as copper, iron, gold, and silver are ...
a)
conductors
b)
brittle
c)
insulators
d)
resistors
30.
What is the formula for resistance?
a)
V x I = R
b)
R = V/I
31.
Unit for current
a)
Ohm
b)
Ampere
c)
Volt
d)
Watt
32.
What is the current flowing throughout the 150 ohm resistor? 
a)
150 mA
b)
90 mA
c)
60 mA
d)
300 mA
33.
What letter represents Current?
a)
A
b)
I
c)
R
d)
E
34.
How do you find the total resistance in a parallel circuit?
a)
Add all the resistances up
b)
Trick question! All circuits have the same resistance!
c)
1/R = 1/R1  + 1/R2  + 1/R3 ..+.. 1/Rn
d)
Rt = 1/R1+ 1/R2 + 1/R3 ..+ ..1/Rn
35.
Find the nominal value of the disc capacitor picture:
 a.  100000 F +/- 10%
 b.  104 pF +/- 10%
c.  1.04 kF +/- 10%
d.  100 nF +/- 10%
a)
A.
b)
B.
c)
C.
d)
D.
36.
Find the nominal value of the resistor picture:
 (brown-gray-brown-gold)

a.  1.81 Ω +/- 5%
b.  180 Ω +/- 5%
c.  1.81 kΩ +/- 10%
d.  18 Ω +/- 10%
   
a)
A.
b)
B.
c)
C.
d)
D.
37.
Express 0.57 in Engineering Notation.
a.  5.7 x 10-1
b.  570 x 103
c.  0.57 x 10-2 
d.  570 x 10-3
a)
A.
b)
B.
c)
C.
d)
D.
38.
Express 23,400,000 in Scientific Notation.
a.  2.34 x 106
 b.  23.4 x 106
c.  2.34 x 107
d.  23.4 x 107 
a)
A.
b)
B.
c)
C.
d)
D.
39.
What are the color codes for a 210 ohm resistor?
a)
brown, grey, red
b)
brown, black, yellow
c)
red, brown, brown
d)
brown, black, brown
40.
Which resistor will prevent the most current flow?
a)
1 ohm
b)
100 ohms
c)
1000 ohms
d)
0.5k ohms
41.
What is the tolerance for a Green, Red, Black, Gold resistor?
a)
1%
b)
20%
c)
5%
d)
10%
42.
The asynchronous input on this flip-flop is
a)
J
b)
K
c)
clear
d)
Q
Clock
43.
What signal activates this Preset input?
a)
0
b)
1
c)
Low clock level
d)
High clock level
44.
This flip-flop transitions on
a)
the rising clock edge
b)
the falling clock edge
c)
high clock level.
d)
low clock level.
45.
What synchronous inputs would output Q' on the next transition edge?
a)
J=0, K=0
b)
J=0, K=1
c)
J=1, K=0
d)
J=1, K=1
46.
Which rule gives Q on the transition edge?
a)

Q = D'

b)
Q = D
c)
Q = Clock
d)
Q = Clock'
47.

What logic values need to be placed on the inputs (a) through (g) of the common cathode seven segment in order to display the number 2?

a)

A

b)

B

c)

C

d)

D

48.

The gate shown below is represented by which of the following truth-tables?

a)

A

b)

B

c)

C

d)

D

49.

Which of the devices is a Negative Edge Triggered J-K flip-flop?

a)

A

b)

B

c)

C

d)

D

50.

For the single flip-flop shown below, what will the output Q be on the next clock pulse?

a)

Q will be high.

b)

Q will be low.

c)

Q will toggle.

d)

Q will not change.

51.

When comparing a PLD circuit to a logic circuit implemented with individual logic gates, the PLD circuit wil

a)

be easier to breadboard with fewer chips and wires.

b)

require you to simplify the expression using a K-Map.

c)

require more chips and wiring.

d)

require a higher operating voltage.

52.

After converting each decimal number to its 8-bit - 2's complement binary equivalent, perform the following arithmetic operations.

a)

overflow 0] 0 1 0 0 1 0 11

b)

overflow 0] 0 1 0 0 1 0 10

c)

overflow 1] 0 1 0 0 1 0 11

d)

overflow 0] 0 1 1 0 1 0 11

53.

After converting each decimal number to its 8-bit - 2's complement binary equivalent, perform the following arithmetic operations.

a)

overflow 0] 1 1 0 0 1 0 0 1

b)

overflow 0] 0 1 0 0 1 0 10

c)

overflow 1] 0 1 0 0 1 0 11

d)

overflow 0] 0 1 1 0 1 0 11

54.

What type of device is shown in the diagram?

a)

D Flip Flop

b)

J-K Flip Flop

c)

SSD

55.

ON the true table above 0 represents

a)

Clear

b)

No change

c)

Set

d)

Toggle

56.

ON the true table above 1 represents

a)

Clear

b)

No change

c)

Set

d)

Toggle

57.
(A+B)(A+C)=
a)
A+BC
b)
BC+BA
c)
ABCD
d)
AB+CD
58.
a)
A
b)
B
c)
C
d)
D
59.
What signal activates this Preset input?
a)
0
b)
1
c)
Low clock level
d)
High clock level
60.
Preset forces Q to
a)
1
b)
0
c)
Q'
d)
No change
61.

For the single flip-flop shown below, what will the output Q be on the next clock pulse?

a)

Q will be high.

b)

Q will be low.

c)

Q will toggle.

d)

Q will not change.

62.

ON the true table above 1 represents

a)

Clear

b)

No change

c)

Set

d)

Toggle

63.
When a feedback line is used in a logic (digital) circuit, it is called a/an____________
a)
A) combinational circuit
b)
B) sequential circuit
c)
C) analog circuit
d)
D) feedback gate
64.
Both latches and flip-flops have two outputs, designated as_____________
a)
A) R and S
b)
B) nR and nS
c)
C) Out1 and Out2
d)
D) Q and nQ
65.
Picture above shows a _______ digital logic gate.
a)
OR
b)
XOR
c)
XNOR
d)
NOR
66.

Using this truth table, fill out a K-Map

a)
b)
c)
67.

Given this Kmap, what would the simplest expression be?

a)

A’B’+AB’C

b)

A’B+AB’C

c)

A’B’+ABC

d)

AB+AB’C

68.

Given this Kmap, what would the simplest expression be?

a)

D’+ABC’+A’B’D’+A’B’CD

b)

ABC’+A’B’D’+A’B’CD

c)

D’+ABC’+A’B’D’+A’B’C

d)

D’+ABC’+A’B’D’

69.

At the next clock pulse, what will Q become?

a)

D=1 and Q=1

b)

D=1 and Q=0

c)

D=0 and Q =1

d)

D=0 and Q=0

70.
A 2-input gate produces the output shown (X represents the output) This is a?
a)
Bunch of lines
b)
OR gate
c)
NOR gate
d)
NAND gate
71.
The circuit shown is equivalent to an
a)
AND gate
b)
XOR gate
c)
OR gate
d)
NOR gate
72.
The output of the decoder in Figure 6-3 will be 1 only when
a)
A = 1, B = 0, C= 1, D = 0
b)
A = 0, B = 1, C= 0, D = 1
c)
A = 1, B = 1, C= 1, D = 1
d)
A =0, B = 0, C= 1, D = 0
73.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
74.
The circuits contain identical lamps and identical cells. In which circuit will the lamps be brightest? 
a)
A
b)
B
c)
C
d)
D
75.

Which of the following statements may help you to identify an answer, without performing the conversion

a)

Octal numbers are never less than the decimal

b)

There is no 9 in octal

c)

Both

d)

none

76.

Without performing the conversion, which of the following numbers is the octal equivalent of 24510?

a)

3798

b)

1748

c)

3658

d)

none

77.

With 128-bit graphic cards becoming standard on many new PCs, there has been some thought of expanding to the base 32 number system. The base 32 number system would be selected, because it is the next greatest power of two after 16. Use your knowledge of number systems to convert the 4P8M base 32 number into its decimal equivalent.

(4P8M32 = ___________10

a)

176950

b)

187950

c)

25600

d)

131072

78.

What character would be displayed if ABCD is 1100

a)

3

b)

9

c)

E

d)

C

79.

What type of device is shown on the picture?

a)

Seven Segment Anode configuration

b)

Seven Segment Cathode configuration

c)

AND Configuration

d)

None

80.

What type of device is shown on the picture?

a)

Seven Segment Anode configuration

b)

Seven Segment Cathode configuration

c)

AND Configuration

d)

None

81.

Analyze the seven-segment display circuit on the picture and determine what it should display.

a)

OPEN

b)

HELP

c)

HIGH

d)

NONE

82.

The Digital Hex Display translates four lines of binary into hexadecimal.

a)

True

b)

False

83.

Analyze the picture and identify what should be displayed

a)

O

b)

P

c)

1

d)

2

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