Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Workshop Instructor/ Instructor Gr. II/ Demonstrator in Electronics Engineering' And exam conducted in the year 2023. And Question paper code was '068/2023'. 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.
068/23
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Determine the value of Ve¢ in UJT which causes the UJT to turn off, Re = 1 k ohm,
lv=10 mA
A) 5V 8) 10५
0) 12५ 0) 7%
Turn off of SCR is usually measured from the instant
A) Anode current become zero
B)
C) Anode voltage become zero
D) Anode current and voltage become zero for same instant
Gate current become zero
Operating frequency of an IGBT is around
A) Greater than 50 kHz B) Less than 50 kHz
©) Less thant MHz D) Greater than 1 MHz
For a given input signal to the relay circuit what is the minimum value of output voltage
ட) +
1K |
12 sinat + ۷
A) 5V B) 12V C) -12V D) -5V
While doing base width modulation in BUT (NPN)
A) Veg is variable
8) Vpg is variable
©) ४८8 15 reverse biased and variable
0) Vop is forward biased and variable
For a given emitter current the collector current can be increased by
A) By reducing the recombination in base region
B) By reducing the base voltage in base emitter region
C) By increasing the base voltage in base emitter region
)
D) None of the above