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 'Lecturer in Electronics Engineering (Govt Polytechni - Technical Education ' And exam conducted in the year 2021. And Question paper code was '004/2021'. 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.
93. Which material in CRT glows when high energetic electrons strike its surface ?
(^) Silicon (B) Aquadag
(C) Germanium (D) Phosphor
94. If a multimeter has a sensitivity of 500 Q per volt and reads 50 ۷ full scale, its internal
resistance will be
(ಹ) 2012 (8) 25kQ
(C) 10kQ رم 50kQ
95. LCDs operate from a frequency ranges from ⋅
(A) 10Hz to 60 Hz (B) 50 Hz to 70 Hz
(C) 30 Hz to 60 Hz (D) None of the above
96. The use of SMPS is normally limited to power levels around
(A) SOMW (8) 100W
(Cc) ٣ (D) 100MW
97. The rate effect in silicon controlled switch (SCS) 15 caused by
(A) Junction capacitance (B) Depletion capacitance
(C) Diffusion capacitance (D) Transition capacitance
98. Choose the correct statement :
(A) IGBTs have higher switching losses as compared to BJTs.
(B) IGBTs have secondary breakdown problems
(C) IGBTs have lower gate drive requirements
(D) IGBTs are current controlled devices
99. Photo voltaic devices in the form of thin films which absorb and convert the sun-light
into electricity is
(A) Cadmium Telluroide (B) Cadmium oxide
(C) Cadmium sulphide (D) Cadmium sulphate
100. A light dependent resistor is basically a
(A) power resistor (B) non-metallic resistor
(C) carbon resistor (D) variable resistor
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