Kerala PSC Previous Years Question Paper & Answer

Title : Assistant Professor in Production Engineering
Question Code :

Page:3


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Assistant Professor in Production Engineering' And exam conducted in the year 2021. And Question paper code was '019/2021/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. 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: 3 out of 13
Excerpt of Question Code: 019/2021/OL

Di and 2 possible
Correct Answer:- Option-é
Question16:-A 10 V battery is connected to a5 A current source (Current enters at the positive terminal of the battery). Power absorbed by the battery and the current source are
‏مكنم‎ W, 50 W
B:-50 W, -50W
50-50 W
0:-50 W, 50 W
Correct Answer:- Option ®
Question 7:-Form factor of full rectified sinusoidal voltage is,
‏قتمدھ‎
‏چحدھ‎
‏دم‎
‎யப
‎Correct Answer:- Option ®
Question18:-A 10 KVA, 250/250 V single phase transformer has the test results as

O.C Test : 250 V, 0.8 A, 50 W_
S.C. Test : 60 V, 3 A, 45 W: Load KVA at maximum efficiency is

۸2۵
B:-50 KVA

۸ کی

6.25 KVA

Correct Answer:- Option-D

Question19:-A 7 KW, 400 V, three phase 50 Hz., 6 pole squirrel cage induction motor operates at 5% slip at full load, when rated voltage at rated frequency is applied. Assuming linear
T-S characteristics, No load speed (for torque 6 Nm) at half the rated voltage and rated frequency is

۸:0
‏جوجھ‎
‏دوم‎
‎णयता
‎Correct Answer:- Option-C

Question20:-For a synchronous motor, the counter em. Eb in magnitude will be
‘AcLess than the applied terminal voltage
B:-Equals the applied terminal voltage
(C-More than the applied terminal voltage
Di-Either less than or equal to or more than the applied terminal voltage
Correct Answer:- Option-D

‘Question21:-A conducting diode is reverse biased at time t = 1, .A measurement of current through the diode is made at three different time instants along the positive time axis at t
1 T,and 7, . Select the correct statement about the diode current.

AccThe current drops to zero at time t= 7, and continues as such at t = 7, and t= 7,

BeThe current reverses at t = 17, and reaches the reverse saturation current at time t = 7. where the interval 7, to 7 is called the transition time

ണ്ണ current drops to reverse saturation current at t = 1, and continues as such at time t = 7, and t= 17, where the interval 7, to 7; is called the storage time

D:"The current reverses at t = T and continues as such tll t = = 1, where the interval 7; to 7; is called the transition

time

'. and then reaches the reverse saturation current at time

Correct Answer: Option-D

Question22:-Assume a half-wave rectifier that uses a transformer with maximum voltage V,, . The peak inverse voltages of the half-wave rectifier with and without a capacitor fiter are
and _ respectively.

ಗ್ಗ Von
BV «Vy
CoV ga Vg
5:21 ‏پ2 پ‎

Correct Answer: Option-C

Question23:-A transistor used 85 an emitter follower has

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