Kerala PSC Previous Years Question Paper & Answer

Title : SUB ENGINEER KSEB
Question Code : A

Page:10


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'SUB ENGINEER KSEB' And exam conducted in the year 2015. And Question paper code was '016/2015/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.

page: 10 out of 11
Excerpt of Question Code: 016/2015/OL

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
ligher 5೧೧೨11
C:-Larger bandwidth
D:-Larger power handling capacity
Correct Answer:- Option-D
Question89:-Power Transistors are invariably provided with
കാട ടി
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 வாளர
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
C:-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
C:-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
B:-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 parmits it to have high
A:-Selectivity
B:-Fidelity
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
B:-large
C:-Small
D:-Very small
Correct Answer:- Option-D
Question97:-In a single phase full converter, the number of SCRs conducting during overlap ‏کا‎
‎Al
‎B:-2

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