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 ' Junior Instructor(Technician Power Electronics System-TPES)' And exam conducted in the year 2023. And Question paper code was '125/2023'. 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.
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125/23
IGBT has
A) High input impedance
B) Low input impedance
C) Large bipolar current carrying capacity
D) Both A) and C)
Three terminals of IGBT
A) Emitter, base, collector B) Gate, emitter, collector
C) Gate, source, drain D) Emitter, base 1, base 2
While testing a DIAC using multimeter, it should show,
A) Low resistance in both direction
B) High resistance in one direction and low resistance in other direction
C) Infinite resistance in either direction
D) Very low resistance in either direction
DIAC exhibits negative resistance characteristics at
A) Break over voltage
B) Below break over voltage
C) Low values of applied voltage
)
D) None of the above
The snubber circuit is used,
A) To trigger the SCR B) To trigger the TRIAC
©) To avoid false triggering of TRIAC D) To trigger the DIAC
The application of SCR is
A) To control the amount of power delivered to the load
B) Only rectification
C) Rectification and regulation
)
D) None of the above
Which of the following is a bidirectional device ?
A) BJT B) TRIAC C) IGBT D) SCR
The insulating layer in MOSFET is made of
A) Silicon B) P type material
C) N type material D) Silicon dioxide
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