Transistors

1. The output impedance of a transistor connected in ___________ arrangement is the highest

common emitter
common collector
common base
none of the above

Detailed SolutionThe output impedance of a transistor connected in ___________ arrangement is the highest

2. A transistor is connected in CB mode. If it is not connected in CE mode with same bias voltages, the values of IE, IB and IC will ___________

remain the same
increase
decrease
none of the above

Detailed SolutionA transistor is connected in CB mode. If it is not connected in CE mode with same bias voltages, the values of IE, IB and IC will ___________

3. The collector of a transistor is ___________ doped

heavily
moderately
lightly
none of the above

Detailed SolutionThe collector of a transistor is ___________ doped

4. If Q of an LC circuit increases, then bandwidth ___________

Increases
Decreases
Remains the same
Insufficient data

Detailed SolutionIf Q of an LC circuit increases, then bandwidth ___________

5. A tuned amplifier is generally operated in ___________ operation

Class A
Class C
Class B
None of the above

Detailed SolutionA tuned amplifier is generally operated in ___________ operation

6. The phase difference between the input and output voltages in a common base arrangement is ___________

180°
90°
270°
0°

Detailed SolutionThe phase difference between the input and output voltages in a common base arrangement is ___________

7. Operating point represents ___________

Values of IC and VCE when signal is applied
The magnitude of signal
Zero signal values of IC and VCE
None of the above

Detailed SolutionOperating point represents ___________

8. The voltage gain in a transistor connected in ___________ arrangement is the highest

common base
common collector
common emitter
none of the above

Detailed SolutionThe voltage gain in a transistor connected in ___________ arrangement is the highest

9. In a transistor, the base current is about ___________ of emitter current

25%
20%
35%
5%

Detailed SolutionIn a transistor, the base current is about ___________ of emitter current

10. IC = [a/(1 – a )] IB + [. . . . . . . . /(1 – a)]?

ICBO
ICEO
IC
IE

Detailed SolutionIC = [a/(1 – a )] IB + [. . . . . . . . /(1 – a)]?

Page 1Page 2Page 3Page 4Page 5
Test 1Test 2