Kerala PSC Pump Operator Paper 2015

Kerala Public Service Commssion Electrician/ Pump Operator Paper 2015
Maximum Marks – 100 Duration – 1 Hour 15 minutes No. of Questions – 100

What is the form factor of pure sine wave?
(a) 0.11
(b) 1.01
(c) 1.00
(d) 1.11

Chisels are made of
(a) High carbon steel
(b) High speed steel
(c) Cast steel
(d) Tungsten steel

A magnifying glass is used
(a) During filling operation
(b) While taking precision measurements
(c) During chipping operation
(d) During cutting operation

A delayed-action cartridge fuse is used for
(a) Motor circuits
(b) Lighting circuits
(c) Heating circuits
(d) None of these

The effect of smoke, acid and alkali is negligible on
(a) TRS wire
(b) VIR wire
(c) Lead sheathed wire
(d) Flexible wire

The inner tube of a HPMV lamp is filled with
(a) Argon agas
(b) Halogen gas
(c) Helium gas
(d) Nitrogen gas

Total electrical degrees for a 4 pole AC machine is equal to
(a) 180 degree
(b) 360 degree
(c) 720 degree
(d) 1080 degree

Which element is used as semiconductor material ?
(a) Copper
(b) Plastic
(c) Silicon
(d) Tungsten

Highest dopped region in a transistor is
(a) Emitter
(b) Base
(c) Collector
(d) All equally

Energy radiated continuously in the form of light-waves is called
(a) Lumen
(b) Illumination
(c) Liminous intensity
(d) Liminous-flux

What is the working temperature of a thoriated tungsten fliament?
(a) 1600 degree Celcius
(b) 1700 degree Celcius
(c) 1800 degree Celcius
(d) 2000 degree Celcius

Impurities in an electrolyte can cause an internal short-circuit condition called
(a) Electrolysis
(b) Depolarization
(c) Polarization
(d) Local action

Permanent magnets are normally made of
(a) Aluminium
(b) Wrought iron
(c) Cast iron
(d) Alnico alloys

Induction instruments have found widest application as
(a) Watt hour meter
(b) Frequency meter
(c) Voltmeter
(d) Ammeter

The power factor of an ordinary electric bulb is
(a) Zero
(b) Unity
(c) Lagging
(d) Leading

Function of a relay is
(a) Fault detection
(b) Energize the tripping circuit
(c) Both (a) & (b)
(d) None of the above

The electrolyte of lead acid battery is
(a) H2SO4
(b) PbSO4
(c) H2O
(d) KOH

In an AC circuit, the ratio of KW/KVA represents
(a) Load power factor
(b) Form factor
(c) Power factor
(d) Diversity factor

The ratio of average load to the maximum demand during a given period is known as
(a) Average factor
(b) Demand factor
(c) Load factor
(d) Power factor

The capacitance of a transmission line is a
(a) Series element
(b) Shunt element
(c) Either (a) or (b)
(d) None of these