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Worksheets

Round 2

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

When a PN junction is forward biased


a)

Depletion region decreases

b)

Minority carriers are not affected

c)

Holes and electrons move away from junction

d)

All of the above

2.

Series components in a series–parallel circuit may be in series with other _____ components, or with other

a)

Individual, combinations of

b)

series, parallel

c)

parallel, series

d)

shunt, parallel

3.

 Hartely oscillator is a

a)

LC oscillator circuit

b)

Digital oscillator circuit

c)

RC oscillator circuit

d)

Op-amp oscillator circuit

4.

How many select lines are required for an 8-to-1 multiplexer?

a)
6
b)
3
c)
4
d)
2
5.

The DeMorgan’s Law would state that:

a)

 (AB)’ = A + B

b)

(A+B)’ = A’*B

c)

(AB)’ = A’ + B

d)

(AB)’ = A’ + B’

6.

What is the total power of the circuit?

a)

2.2 W

b)

4.2 W

c)

6.2 W

d)

8.2 W

7.

The transducers converts ___

a)

Non-electrical signals into electrical signals

b)
thermal signals
c)
chemical signals
d)

None of the above

8.

Which of the following is an example of a demultiplexer application?

a)
Traffic control system
b)
Medical imaging system
c)
Communication system
d)
Power generation system
9.

An open resistor in parallel will cause the total _ to increase.

a)
current
b)
voltage
c)
power
d)
resistance
10.

The rate at which work is performed is called______

a)
speed
b)

current

c)

energy

d)

power

11.

What is the binary representation of decimal number 9 ?

a)
1010
b)
1001
c)
1100
d)
1111
12.

A four bit number is given by 1001.Its 1’s complement is


a)
0110
b)
1100
c)
1111
d)
1010
13.

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

a)

0

b)

1

c)

A

d)

Ā

14.

If a hexadecimal number needs to convert to binary ,for each hexadecimal digit ,there will be how many bits

a)
8
b)
6
c)
2
d)

4

15.

What is the addition of the binary number 101001+ 010011 = ?

a)
111100
b)
111001
c)
101110
d)
110111
16.

 In the toggle mode, a JK flip-flop has

a)

J = 0, K = 1

b)

J = 1, K = 1

c)

J = 0, K = 0

d)

J = 1, K = 0

17.

What voltage will an ac voltmeter display?

a)

rms

b)

average

c)

peak

d)

peak to peak

18.

A switch is a device that:____

a)

short circuits complex circuits

b)

holds a fuse

c)

has double poles

d)

opens or completes a current path

19.

In the equation V=10sin100t frequency is____

a)

10 Hz

b)

15 Hz

c)

20 Hz

d)

25 Hz

20.

Which is beta's current ratio?

a)

IC/IB

b)

IC/IE

c)

IB/IE

d)

IE/IB