1. A circuit with a fixed emitter current is called ?

Base bias

Emitter bias

Transistor bias

Two-supply bias

Answer: Emitter bias

Explanation:


2. In CE mode of transistor, the most noticeable effect of a small increase in temperature is ?

The increase in output resistance

The increase in leakage current Iceo

The decrease in AC current gain

Increase in AC current gain

Answer: The increase in leakage current Iceo

Explanation:


3. A small collector current with zero base current is caused by the leakage current of the ?

Emitter diode

Collector diode

Base diode

Transistor

Answer: Collector diode

Explanation:


4. In CE configuration, output v-i characteristics are drawn by taking ?

VCE versus IC for constant value of IE

VCE versus IC for constant value of IB

VCE versus IE for constant value of VCB

none of these

Answer: VCE versus IC for constant value of IB

Explanation:


5. The emitter diode is usually ?

Forward-biased

Reverse-biased

Non-conducting

Operating in the breakdown region

Answer: Forward-biased

Explanation:


6. If you recalculate the collector-emitter voltage with the second approximation, the answer will usually beIf you recalculate the collector-emitter voltage with the second approximation, the answer will usually be ?

Smaller than the ideal value

The same as the ideal value

Larger than the ideal value

Inaccurate

Answer: Larger than the ideal value

Explanation:


7. A transistor is said to be in quiescent state when ?

It is unbiased

No current flows through it

Emitter junction is just biased equal to Collector Junction

No signal is applied to the input

Answer: No signal is applied to the input

Explanation:


8. If the base current is 100 mA and the current gain is 30, the collector current is ?

300 mA

3 A

333 A

10 A

Answer: 3 A

Explanation:


9. For normal operation of the transistor, the collector diode has ?

Forward-biased

Reverse-biased

Non-conducting

Operating in the breakdown region

Answer: Reverse-biased

Explanation:


10. The current gain of a transistor is defined as the ratio of the collector current to the ?

Base current

Emitter current

Supply current

Collector current

Answer: Base current

Explanation: