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III -IV Semester Practical Internal Test

Total questions: 10

Worksheet time: 7mins

Name
Class
Date
1.

This is a graph that is seen on CRO. How is it change after full wave rectification process without filter circuit?

a)
b)
c)
d)
2.

Device used for filter circuit is

a)

Diode

b)

Capacitor

c)

Transistor

d)

Amplifier

3.

In the forward bias arrangement of a p-n junction diode,

a)

the n-end is connected to the positive terminal of the battery

b)

the p-end is connected to the positive terminal of the battery

c)

the direction of current is from n-end to p-end in the diode

d)

the p-end is connected to the negative terminal of the battery

4.

The AND gate output will be high if the two inputs are __________

a)

00

b)

01

c)

10

d)

11

5.

The unit of Young’s modulus of elasticity is:

a)

pascals

b)

metres

c)

dimension-less

d)

newtons

6.

If potential difference per unit length of potentiometer wire is 0.15 V/m, the 444 cm length of the standardised potentiometer wire will correspond to a voltage of .............. V

a)

0.4

b)

0.6

c)

0.2

d)

0.8

7.

What is the length of the equivalent simple pendulum of the compound pendulum as can be calculated from the graph?

a)

AB+BG

b)

AG - BG

c)

AG+ BG

8.

Ripple factor of a full wave rectifier with filter is

a)

1(4fCRL3 )\frac{1}{\left(4fCR_L\sqrt{3\ }\right)}

b)

1(23fCRL )\frac{1}{\left(2\sqrt{3}fCR_{L_{ }\ }\right)}

c)

1(42 fCRL)\frac{1}{\left(4\sqrt{2}\ fCR_L\right)}

9.

Consider a 10 V peak to peak voltage given to a positive clamper. If the dc shift happened to the given waveform due to the clamper circuit is 4.5 V, the peak of the shifted waveform will be at

a)

9.5 V

b)

14.5 V

c)

4.5 V

d)

24.5 V

10.

What is the static resistance of the Si Diode at the forward voltage 0.7 V ?

a)

3.1 m ohm

b)

3.1 ohm

c)

0.028 ohm

d)

28 ohm