D:-GaAsP
Correct Answer:- Option-C
Question88:-Avalanche Photo diodes are preferred over PIN diodes in optical communication systems because of
A:-Speed of operation
B:-Higher Sensitivity
C:-Larger bandwidth
D:-Larger power handling capacity
Correct Answer:- Option-D
Question89:-Power Transistors are invariably provided with
A:-Heat Sink
B:-Metallic casing
C:-Soldered connections
D:-Fan for heat removal
Correct Answer:- Option-A
Question90:-In a JFET, beyond Pinch Off Voltage, as the drain voltage increases, the drain current
A:-Decreases
B:-Remains constant
C:-Increases
D:-May increase or decrease
Correct Answer:- Option-B
Question91:-After firing an SCR, if the gate pulse is removed, the SCR current
A:-Remains the same
B:-Reduces to zero
:-Rises up
D:-Rise a little, then falls to zero
Correct Answer:- Option-A
Question92:-One of the characteristic of the Emitter Follower is its
A:-Low input resistance
B:-Low current gain
:-Low voltage gain
D:-High output resistance
Correct Answer:- Option-C
Question93:-Cross Over Distortion in class B push pull amplifier is eliminated by
A:-Class C operation
Class AB operation
C:-Elimination of output transformer
D:-Reducing transistor bias
Correct Answer:- Option-B
Question94:-A high Q tuned circuit in a tuned amplifier permits it to have high
A:-Selectivity
idelity
C:-Sensitivity
D:-Frequency range
Correct Answer:- Option-A
Question95:-Which of the following Op-Amp system is non linear?
A:-Current to Voltage Converter
B:-Logarithmic Amplifier
C:-Active Filter
D:-Delay Equalizer
Correct Answer:- Option-B
Question96:-At microwave frequencies, the size of the antenna becomes
A:-Very large
-Large
C:-Small
D:-Very small
Correct Answer:- Option-D
Question97:-In a single phase full converter, the number of SCRs conducting during overlap is
‏ا‎
‎8:-2