ELECTRICIAN
(THEORY)
SEMESTER - II
JULY 2018 NSQF
How the capacity of battery is specified?a)Volt
b) Watt
c) Volt Ampere
d) Ampere hour
Answer : d) Ampere hour
What is the name of defect that bending of plates in secondary cells?
a) Partial short
b) Local action
c) Buckling
d) Hard sulphation
Answer : c) Buckling
itiquestion.blogspot.com
Which type of transformer is used for high frequency application?
a) Ring core transformer
b) Ferrite core transformer
c) Silicon steel core transformer
d) Grain oriented core transformer
Answer : b) Ferrite core transformer
What is the function of conservator in transformer?
a) Allows expansion of oil level due to load variation
b) Transfers the heat to atmosphere
c) Allows to release internal pressure
d) Prevents the moisture entry
Answer : a) Allows expansion of oil level due to load variation
Which loss of transformer is determined by short circuit test?
a) Eddy current loss
b) Windage loss
c) Hysteresis loss
d) Copper loss
Answer : d) Copper loss
itiquestion.blogspot.com
Calculate the voltage regulation in percentage of the
transformer if the no load voltage is 240 volt and full load
voltage is 220 volt?
a) 7.2%
b) 9.09%
c) 8.71%
d) 8.3%
Answer :
What is the purpose of using laminated core in transformer?
a) Reduce eddy current loss
b) Reduce hysteresis loss
c) Reduce mechanical loss
d) Reduce copper loss
Answer : a) Reduce eddy current loss
What is the S.I unit of luminous intensity?
a) Lux
b) Lumen
c) Candela
d) Steradian
Answer : c) Candela
Which force is required to move the pointer
from zero position in an indicating instrument?
a) Deflecting force
b) Controlling force
c) Air friction damping
d) Eddy current damping
Answer : a) Deflecting force
Which is the position to use the instrument
provided with gravity control?
a) Any position
b) Vertical position
c) Inclined position
d) Horizontal position
Answer : b) Vertical position
Which error is caused by the incorrect position of
instrument reading?
a) Device error
b) Human error
c) Influence error
d) Switching error
Answer : a) Device error
itiquestion.blogspot.com
Which instrument is used to measure one
ohm and below one ohm resistance value
accurately?
a) Megohm meter
b) Shunt type ohm meter
c) Multimeter (analog)
d) Series type ohm meter
Answer : b) Shunt type ohm meter
What is the purpose of the 3 terminal provided in a advanced megohm meter?
a) Get higher ohmic values
b) Get accurate readings without oscillation
c) Pass the excess current to ground
d) Pass the excess voltage to ground
Answer : b) Get accurate readings without oscillation
Which material is used to make heating element?
a) Silver
b) Copper
c) Nichrome
d) Aluminium
Answer : c) Nichrome
Which material is coated in tungsten electrode
of a fluorescent tube lamp?
a) Barium and stroatium oxide
b) Phosphor powder
c) Fluorescent powder
d) Silver oxide
Answer : a) Barium and stroatium oxide
itiquestion.blogspot.com
Which position MB type high pressure mercury
vapour lamps are operated?
a) Any position
b) Inclined
c) Horizontal
d) Vertical
Answer : a) Any position
What is the function of leak transformer in
high pressure sodium vapour lamp circuit?
a) Ignite the high voltage initially
b) Reduce the working voltage
c) Increase the working voltage
d) Reduce the starting current
Answer : a) Ignite the high voltage initially
How stroboscope effect in industrial twin tube light
fitting is reduced?
a) Connecting capacitor parallel to supply
b) Connecting capacitor in series with one tube light
c) Connecting capacitor in series with supply
d) Connecting two capacitors in series to each tube light
Answer :
What is the function of stirrer motor in micro wave oven?
a) Draws cooling air inside
b) Revolves and reflects the electromagnetic energy
c) Exhausts the hot air outside
d) Spreads the heat uniformly
Answer : b) Revolves and reflects the electromagnetic energy
Which type of A.C single phase motor is used in food mixer?
a) Universal motor
b) Repulsion motor
c) Spl it phase motor
d) Shaded pole motor
Answer : a) Universal motor
What is the minimum size of Aluminum earth
continuity conductor used in single phase domestic
wiring as per BIS?
a) 3Sq.mm
b) 3.5Sq.mm
c) 2.5Sq.mm
d) 1.5Sq.mm
Answer : c) 2.5Sq.mm
How the conduit pipes are specified?
a) Length in metre
b) Outer diameter in mm
c) Inner diameter in mm
d) Wall thickness in mm
Answer : b) Outer diameter in mm
itiquestion.blogspot.com
What is the fusing factor for rewireable fuse?
a) 1.1
b) 2.1
c) l.4
d) 2.5
Answer : c) l.4
What is the purpose of underwriter's knot for
pendent holder connection?
a) Reduce the strain from the terminals of accessories
b) Increase mechanical strength
c) Prevent excessive cap cover pressure
d) Avoid loose connections
Answer : a) Reduce the strain from the terminals
of accessories
Which device converts sunlight into electrical energy?
a) Light emitting diode
b) Liquid crystal diode
c) Photo voltaic cell
d) Light dependent resistor
Answer : c) Photo voltaic cell
Which type of load is protected by the L-series MCB?
a) Motors
b) Hand tools
c) Geyser
d) Air conditioner
Answer : c) Geyser
What is the effect of low current rated cable used
to connect higher current load?
a) Cable damage due to heat
b) Load current increases
c) Voltage drop decreases
d) Voltage drop increases
Answer : a) Cable damage due to heat
How many two way switches with intermediate
switch are used to control one lamp from
three different places?
a) 1
b) 4
c) 3
d) 2
Answer :
Which method is used to reduce earth resistance
value in a existing earth?
a) Increasing the length of electrode
b) Adding more sand and charcoal in earth pits
c) Keeping wet condition in earth pits always
d) Increasing the diameter of earth electrode
Answer : c) Keeping wet condition in earth pits always
itiquestion.blogspot.com
Why A.C is required to measure the earth resistance
by using earth resistance tester?
a) Regulate the current
b) Avoid electrolytic emf interference
c) Decrease the voltage drop
d) Increase the voltage drop
Answer : b) Avoid electrolytic emf interference
What is the advantage of concealed wiring?
a) Easy to maintain
b) Less voltage drop
c) High insulation resistance
d) Protection against moisture
Answer : d) Protection against moisture
What is the maximum permissible load for
a power sub circuit as per I.E rules?
a) 800 Watt
b) 3000 Watt
c) 2000 Watt
d) 1500 Watt
Answer : b) 3000 Watt
itiquestion.blogspot.com
Which location the service connection supply
leads to be connected at consumer main
boaid?
a) IC cut out
b) Main switch
c) Energy meter
d) Distribution board
Answer : c) Energy meter
itiquestion.blogspot.com
Which law secondary cell works?
a) Faradays laws of electromagnetic induction
b) Joule's law
c) Faradays laws of electrolysis
d) Lenz's law
Answer :
No comments:
Post a Comment