KPSC Second Grade Overseer Electrical Paper 2016

Kerala Public Service Commission Second Grade Overseer Electrical Paper 2016

Which of the following is used in ceiling fan ?
(a) Universal motor
(b) Synchronous motor
(c) Series Motor
(d) Induction motor

Unit of luminous intensity
(a) Lumen
(b) Lux
(c) Lumen/ meter sq.
(d) Candela

The power factor of pure resistive circuit is
(a) Zero
(b) Leading
(c) Lagging
(d) Unity

Illumination of a surface is inversely proportional to
(a) Luminous intensity
(b) Distance from the source
(c) Square of the distance from the source
(d) Total Lumen

Generator efficiency is maximum when
(a) Variable loss is minimum
(b) Constant loss = Variable loss
(c) Constant loss is minimum
(d) Constant loss is half of the variable loss

Form factor = ____________
(a) rms value / avg value
(b) avg. value/ rms value
(c) rms value/ peak value
(d) peak value/ rms value

Maximum number of electron in valence shell of an atom is
(a) 3
(b) 6
(c) 8
(d) 16

Insulation resistance can be measured using
(a) Ohm-meter
(b) Multimeter
(c) Clampmeter
(d) Megger

Two wattmeter method of power measurement is suitable for
(a) balanced load only
(b) unbalanced load
(c) both balanced and unbalanced load
(d) delta connected load

Ward-Leonard system is used for
(a) Voltage regulation of transformer
(b) Speed control of dc motor
(c) Excitation of alternator
(d) Voltage regulation of alternator

Base of BJT is
(a) Lightly doped
(b) Heavily doped
(c) Moderately doped
(d) Not doped

Dielectric strength of air is __________ kv/mm.
(a) 2.5
(b) 25
(c) 3.2
(d) 16

Relative permeability of material =
(a) Flux density produced in vacuum
(b) Flux density produced in material
(c) Flux density produced in vacuum/ Flux density produced in material
(d) Flux density produced in material/ Flux density produced in vacuum

The tube of fluorescent lamp is filled with
(a) Mercury and Nitrogen
(b) Mercury and Argon
(c) Nitrogen and Argon
(d) Oxygen and Argon

Transformers are rated in
(a) KW
(b) MW
(c) KVA
(d) KVAR

Frequency of rotor current of 3 phase induction motor is
(a) Slip x Frequency of stator current
(b) Frequency of rotor current
(c) Slip/ Frequency of stator current
(d) Frequency of stator current / slip

__________ is known as universal gate
(a) ANG gate
(b) NAND gate
(c) OR gate
(d) NOT gate

Number of parallel path in wave winding is
(a) 3
(b) 4
(c) 6
(d) 2

Zener diodes are commonly used as
(a) Rectifier
(b) Amplifier
(c) Voltage regulator
(d) Filter

Which is secondary cell ?
(a) Dry cell
(b) Leclanche cell
(c) Voltaic cell
(d) Lead acid cell