Semiconductor Electronics Mock Tests

24 questions available

Semiconductor Electronics Mock Test 1

Questions: 24

Sample Questions

Class 12 Physics

A p-n junction diode is forward biased. The barrier potential:

A Increases

B Decreases

C Remains unchanged

D Initially increases then decreases

JEE Main Physics

Semiconductors have a negative temperature coefficient of resistance because:

A number density of free charges increases rapidly with temperature

B the number of ions increases with temperature

C electrons scatter more at high temperature

D the band gap increases with temperature

Class 12 Physics

In a p-n junction diode, the depletion layer width increases when the diode is:

A forward biased

B reverse biased

C neither forward nor reverse biased

D both forward and reverse biased

Class 12 Physics

The current in a p-n junction diode in reverse bias:

A increases rapidly with voltage

B remains essentially constant at a small value

C decreases to zero

D increases linearly with voltage

CUET Physics

A transistor has a current gain β = 100. If the base current changes by 10 μA, the change in collector current is:

A 1 mA

B 10 mA

C 0.1 mA

D 100 mA

Class 12 Physics

A transistor is used as a common emitter amplifier. The input resistance is 1 kΩ and the load resistance is 5 kΩ. If β = 100 and the base current changes by 10 μA, the change in output voltage is:

A 0.5 V

B 5 V

C 0.1 V

D 1 V

JEE Main Physics

The frequency of AC output in a full-wave rectifier fed by 50 Hz source is:

A 100 Hz

B 50 Hz

C 25 Hz

D 200 Hz

JEE Main Physics

In an n-p-n transistor, the current gain is 50. The emitter current is 6 mA. The base current is:

A 0.1 mA

B 0.5 mA

C 1.0 mA

D 0.2 mA

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