Kerala PSC Previous Years Question Paper & Answer

Title : VOCATIONAL TEACHER MAINTENANCE AND REPAIRS OF DOMESTIC APPLIANCES VHSE
Question Code : A

Page:9


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'VOCATIONAL TEACHER MAINTENANCE AND REPAIRS OF DOMESTIC APPLIANCES VHSE' And exam conducted in the year 2015. And Question paper code was '225/2015'. 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: 9 out of 12
Excerpt of Question Code: 225/2015

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78. `

The tariff that takes into account of ‏عط‎ power factor of the consumer is :
(ക) Shding scale tariff (B) Block rate tariff
(C) 2 part tariff (D) Maximum demand tariff

An over excited synchronous motor running on no load is called :
(ಗಿ) Synchronous generator (18) Synchronous condenser
(¢) Induction generator (D)} Induction motor

High load factor :
(A) Increases cost per unit generated
(13) Reduces cost per unit generated
)0 Increases variable load problems
(D) Causes frequent use of regulating devices

The major disadvantage of solar power generation :
(ക cost of fuel (B) corrosion
(C) large area requirement (D) pollution

Calculate the reactive power, if the circuit draws a current of 1.5 kA at a voltage 20 kV with a
power factor 0.8 :

(ಯ) 24 kW (B) 24kVAR
(0) 18kVA (D) 18kVAR

The zero sequence component always flow through :
(A) phase wires (B) neutral wire
(0 earth wire (D) any of the above

Most suitable method earthing of 8 delta connected generator is :
(ಗೆ) plate earthing (B) pipe earthing
(0 transformer earthing (D) resistance earthing ‏٭'‎

The insulation resistance is measured by :

(ಗ) Earth tester (B) Wheatstone's bridge
(0) Kelvin's bridge M) Meggar
Acceptable limit of earth resistance for domestic installations :
{A) less than 10 chm (18) less than 12 ലി
(C) less than 14 ohm (D) . less than 15 ochm
11 =

[7.17.0.]

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