Semiconductor Devices Test

Result

Semiconductor Devices Test - 37

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Weekly Quiz Competition

Question 1
4 / -1

Common base current gain of a NPN transistor is 0.99. The input resistance is 1000Ω and load resistance is 10,000Ω . The voltage gain in common emitter mode is _________ .

A
9900

B
99000

C
99

D
990

Solution
Question 2
4 / -1

In forward bias made, the P.N junction diode resistance will __________ .

A
Infinity

B
Zero

C
Less

D
More
Question 3
4 / -1

To obtain OR gate from NOR gate, you will need ____________

A
One NOR gate

B
One NOT gate

C
Two NOT gate

D
One OR gate
Question 4
4 / -1

A

B

C

D
Question 5
4 / -1

A

B

C

D

Solution
Question 6
4 / -1

In a P–type silicon, which of the following statement is true ?

A
Electrons are majority charge carries and trivalent atoms are the dopants

B
Electrons are minority charge carries and pentavalent atoms are dopants

C
Holes are minority charge carriess and pentavalent atoms are dopants

D
Hole are majority charge carries and trivalent atoms are dopants
Question 7
4 / -1

A zener diode used as voltage regulator is connected ___________.
(i) in forward bias
(ii) in reverse bias
(iii) in parallel with load
(iv) in series with load

A
(i) and (ii) are correct

B
(ii) and (iii) are correct

C
only (i) is correct

D
only (iv) is correct
Question 8
4 / -1

A n-p-n transistor is used in common emitter made in an amplifier circuit. A change of40µA in the base current changes the output current by 2mA and 0.04V in input voltage.
The input resistance is ________ .

A
1kΩ

B
10Ω

C
10 kΩ

D
100Ω

Solution
Question 9
4 / -1

A n-p-n transistor is used in common emitter made in an amplifier circuit. A change of40µA in the base current changes the output current by 2mA and 0.04V in input voltage.
The current amplification factor is _________ .

A
20

B
30

C
50

D
40

Solution
Question 10
4 / -1

A n-p-n transistor is used in common emitter made in an amplifier circuit. A change of40µA in the base current changes the output current by 2mA and 0.04V in input voltage.
If a load of 6kΩ is used, then the voltage gain of the amplifier is __________ .

A
100

B
200

C
300

D
400

Solution