Page:5
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Tradesman (Wireman)' And exam conducted in the year 2023. And Question paper code was '043/2023/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.
ACeramic capacitors
B:-Mica capacitors
Paper capacitors
೧-೫೯ capacitors
Correct Answer:-Question Cancelled
Question38:-How materials dissipate the energy due to hysteresis loss ?
‘AsForce developed as counter emt
B:-Exist as residual magnetism
Cxn the form of current
D:Appears in the form of heat
Correct Answer: Option-D
Question39:-Among the following factors, which one is not determine the inductance ?
AsTypes of core permeability
Br:Weight of the coll
யாம of tums of wire in coil
-Spacing between tums of wire
Correct Answer- Option8
Question40:-The name which indicates the opposition offered to flow the current by a capacitor ?
‘Capacitance
B:-Dielectric strength
CCapacitive reactance
“Resistance
Correct Answer Option-C
Question4l-What is the frequency of pure direct current in hertz ?
كم
+)
=
D-Higher than the alternating current
Correct Answer: Option-8
‘Question42:-How can define the Form factor of an alternating supply ?
Ashe ratio of effective value to average value of a half cycle
B:-The ratio of effective value to average value of a full cycle
(ना ratio of peak value to average value of a half cycle
D-The ratio of peak value to average value of a full cycle
Correct Answer Option-A
Questiona3-Why a circuit with pure inductance alone can never be formed ?
[Ashe inductance in the connecting wires opposes the pure inductance
:-Connecting wires and the inductors all have some resistance
C-Connecting wires and the inductors all have some capacitance
None of these
Correct Answer
1 Option 8
Question44:-What is the theoretical value of power factor fora circuit containing pure resistance only ?
Aszero
6100१4५९
وم
D:One
Correct Answer: Option-D
Question4s Why in the case of pure inductive circuit the power factor is zero?
AsThe angle between the current and voltage is 0°
B:-The angle between the current and voltage is 90°
The angle between voltage and inductance is 0°
D-The angle between voltage and inductance is 90°
Correct Answer:- Option-8
‘Question46:-Choose correct equation for power factor. Here
denotes for Resistance,
denotes for Voltage and 'Z' denote for Impedance.
A=Power factor, cos ಇ 1/2.
B:-Power factor, cos® = Z/V