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 'Pump Operator' And exam conducted in the year 2023. And Question paper code was '019/2023'. 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.
019/23
34. Which of the following materials come into the group of semiconductors ?
i) Gold
ii) Silver
iil) Copper
iv) Silicon
A) Only i andii B) Only iii C) Only iand iii D) Only iv
35. For the normal operation of a transistor
i) Emitter — Base junction is forward biased and Collector — Base junction is
reverse biased
ii) Emitter — Base junction is reverse biased and Collector — Base junction is
forward biased
iii) Emitter - Base junction and Collector — Base junction are forward biased
A) Onlyi B) Only ii and iii C) Only iii D) Only ii
36. An ideal transformer which has
i) No losses
ii) Winding losses
iil) Copper losses and Core losses
A) Only ii B) Only i C) Only ii and iii D) Only iii
37. Main advantages of FET over BUT is/are
i) High input impedance
ii) Less noise level
iii) Low input impedance
iv)
)
iv) Considerable noise level
A) Only iii and iv B) Only ii C) Only iii D) Only i and ii
38. BUTisa
i) Voltage control device
ii) Power controlled device
iil) Current controlled device
A) Only i andii B) Only ii
C) Only iii D) All the above (i, ii and iii)
39. Most commonly methods used for fabrication of transistor is/are
i) Point contact
ii) Alloy junction
iil) Grown junction
A) Only i andii B) Only ii and iii
C) Only i and iii D) All the above (i, ii and iii)