## Kerala PSC Previous Years Question Paper & Answer

Title : Foreman (Electrical), Assistant Manager (Electrical) etc - Industries & Commerce, The Kerala Ceramics Ltd etc
Question Code : A

Page:6

Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Foreman (Electrical), Assistant Manager (Electrical) etc - Industries & Commerce, The Kerala Ceramics Ltd etc ' And exam conducted in the year 2022. And Question paper code was '075/2022'. 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: 6 out of 16
Excerpt of Question Code: 075/2022

28. If the primary current of transformer is twice the secondary current, then it is named

transformer.
(^) Step down (B) One to one
(C) Ideal (D) Step up

29. 1൩൦ iron-silicon alloy core 18 used in a transformer to
(^) Ensure high permeability of the magnetic circuit
(B) Keep the minimum iron loss
( (A)and (8)
(D) None of these

30. The most economically used transformer connection is for small current and high
voltage applications.
(^) Star-star (B) Delta-star
(0 Star-delta (2) Delta-delta
31. 116 octal number 752.222 is equivalent to which of the following 7
(A) ‏ئ]‎ 6 (8) 6
(൭ [LA8.A3]16 (D) )) 6

32. A 4 bit ripple counter and a 4 bit synchronous counter are made using flip flops having a
propagation delay of 10n seconds each. If the worst case delay in the ripple counter and
the synchronous counter be R and S respectively, then

(A) R=10ns, \$=40ns (8) R=40ns, \$= 10ns
(൭ R=10ns, ऽ =30ns (2) R=30ns, ऽ = 10௩

33. Which combinational circuit is well-known for selecting a single input from multiple
inputs & guiding the binary information to output line ?
(A) Data selector
(B) Data distributor
(C) Both data selector and data distributor
(D) De-multiplexer

34. How many NOT gates are required for the construction of a 4 to 1 multiplexer from the
followings ?

(A) 3 (B) 4
(0 2 (D) 5
35. 1 the case of adder circuits the carry propagation can be expressed as
(A) Cp=A-B (B) All but YO are LOW
(೧ Cp=A+B (0) All but YO are HIGH
36. The design and architecture of an arithmetic and logic circuit is established on which
scheme ?
(A) Sequential logic (B) Combinational logic

(C) Multiplexing (0) De-Multiplexing