KPSC Tradesman Wiremen Paper 2016

Kerala Public Service Commission Tradesman Wiremen Paper 2016

The shape and colour of mandatory sign is
(a) circular shape – black symbol on yellow background
(b) circular shape – white symbol on blue background
(c) square shape – green symbol on white background
(d) triangular shape – black symbol on blue background

Open circuit test should be conducted before the __________ to make sure that the complete circuit included in the test
(a) insulation test
(b) ground test
(c) s.c. test
(d) o.c. test

Which tool is NOT used for making pilot holes on wooden/metal article?
(a) Center punch
(b) Bradawl
(c) Pocker
(d) Rawal plug tool

What effect of electric current is used in electric motors ?
(a) chemical effect
(b) magnetic effect
(c) heating effect
(d) shock effect

The method of fire extinguishing by isolating the fire from the supply of oxygen by blanketing it is known as
(a) smothering
(b) starving
(c) accumulation
(d) cooling

What does S.W.G stands for ?
(a) Standard Western Gauge
(b) Swiss Wire Gauge
(c) Swiss Western Gauge
(d) Standard Wire Gauge

Combination pilers are NOT used for
(a) cutting
(b) twisting
(c) hammering
(d) holding

Armouring is provided in the cables to safeguard against
(a) moisture entry
(b) white ant
(c) bursting of failure
(d) mechanical injury

The floats used in the Buchholz relay is operated by
(a) mercury switches
(b) iron clad switches
(c) centrifugal switches
(d) flush mounting switches

A source of e.m.f is required in order to
(a) prevent the escape of electrons
(b) insulate the electrons from the unbalanced atoms
(c) get the electrons into motion
(d) change the property of conductance into resistance

Three resistors are connected in series across a 27 V supply. The second resistor has twice the resistance of the first, the third resistor has three times the resistance of the second. The voltage across the third resistor is
(a) 18 V
(b) 6 V
(c) 9 V
(d) 3 V

According to Fleming’s Left Hand Rule the angle between the thumb, middle finger and forefinger must be
(a) 180 degree between any two
(b) right angle between any two
(c) all must be 45 degree apart
(d) mutually at right angle each other

The standard supply frequency in India is
(a) 60 c/s
(b) 50 c/s
(c) 55 Hz
(d) 45 c/s

Luminous efficiency of a Fluorescent Tube is
(a) 30 lumen/watt
(b) 40 lumen/watt
(c) 60 lumen/watt
(d) 80 lumen/watt

What is the unit of Magneto Motive Force ?
(a) Volt
(b) Ampere
(c) Ampere-turns
(d) Weber

Whenever the magnetic flux linking with a conductor changes, an e.m.f is induced in that conductor. The above statement is due to
(a) Weber and Ewing’s law
(b) Faraday’s law of electrolysis
(c) Coulomb’s law
(d) Faraday’s law of electromagnetic induction

Which of the following is NOT a diamagnetic material ?
(a) Air
(b) Water
(c) Glass
(d) Sulpur

Which series MCBs are designed to protect circuits with inductive loads ?
(a) L series MCB
(b) G series MCB
(c) AC series MCB
(d) DC series MCB

Out of the four metal/alloys given below, one has almost no change in resistance for change in temeprature
(a) Nickel
(b) Nichrome
(c) Maganin
(d) Platinum

As per the recommendation of BIS and NEC, the minimum clearance between the ceiling and the plane of the blades of the ceiling fan shall not be less than
(a) 300 mm
(b) 1300 mm
(c) 2400 mm
(d) 200 mm