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Question

Match the following:

List I (BJT amplifier) List II (Characteristics)

A. CE 1. good voltage gain, good current gain

B. CC 2. voltage gain less than 1, high current gain

C. CB 3. current gain less than 1, voltage gain high

Options
A. A-1, B-2, C-3
B. A-1, B-2, C-3
C. A-3, B-1, C-2
D. A-3, B-2, C-1

Correct Answer

A-1, B-2, C-3

More questions

1. In TE₁₀mode the largest electric field in a rectangular wave guide, occurs
Options
A. along centre line of broad wall (i.e. x = a/2)
B. along the broad wall (i.e. x = 0 and x = a)
C. either (a) or (b)
D. neither (a) nor (b)

2. In a bipolar transistor which current is largest
Options
A. collector current
B. base current
C. emitter current
D. base current or emitter current

3. A klystron amplifier generally uses Pierce gun
Options
A. True
B. False

5. Crossover distortion behaviour is characteristic of
Options
A. class A O/P stage
B. class B O/P stage
C. class AB output stage
D. common pulse O/P state

6. Noise limiter is provided on AM receivers to
Options
A. reduce interfering noise due to ignition system
B. reduce noise due to electrical storms
C. reduce interference due to electrical machinery
D. all of the above

7. Consider the following statements about directional coupler shown in the figure
1. Ports 1 and 2 are decouple
2. Ports 3 and 4 are decoupled
3. Pots 1 and 3 are decoupled
4. Ports 1 and 4 are decoupled
Which of the above statements are correct?
Options
A. 1 and 2 only
B. 3 and 4 only
C. 1, 2 and 3
D. 2, 3 and 4

8. A transmission line has a characteristic impedance of 50 ? and a resistance of 0.1 ?/m, if the line is distortion less, the attenuation constant (in Np/m) is
Options
A. 500
B. 5
C. 0.014
D. 0.002

9. Match the following:

List I List II

A. 1. Slot line

B. 2. Coplanar line

C. 3. Microstrip
Options
A. A-1, B-2, C-3
B. A-3, B-2, C-1
C. A-2, B-3, C-1
D. A-3, B-1, C-2

10. Consider the following statements : A clamper circuit
1. adds or subtracts a dc voltage to a waveform
2. does not change the waveform
3. amplifiers the waveform
Which are correct?
Options
A. 1, 2
B. 1, 3
C. 1, 2, 3
D. 2, 3

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