Q.1 Which type of fire extinguisher is not suitable for electric fire
(A) Foam extinguisher
(B) Carbon dioxide extinguisher
(C) Soda acid extinguisher
(D) Dry power extinguisher
Q.2 The earth pit should not be located near
(A) Roads
(B) Rail tracks
(C) Pavements
(D) All option are correct
Q.3 In batton wiring the cables are carried on seasoned teak wood perfectly straight and well varnished teak wood batton of thickness not less than?
(A) 1 cm
(B) 3 cm
(C) 2 cm
(D) 4 cm
Q.4 In places where acids and alkalies are present, the type of wiring used is…..
(A) PVC
(B) TRS
(C) VIR
(D) Weather proof
Q.5 In which combination, the electrical appliances are connected at home?
(A) Series
(B) Parallel
(C) Series-parallel
(D) None of these
Q.6 The another name of neutral earthing is
(A) Equipment earthing
(B) System earthing
(C) Solid earthing
(D) Direct earthing
Q.7 Cutting plier use for electrical work must have
: (A) High strength
(B) Insulation
(C) Not corrode
(D) Sharp
Q.8 Which type of wiring having very long life:
(A) Conducting wiring
(B) Casing capping wiring
(C) Batten wiring
(D) Cleat wiring
Q.9 Cheapest system of wiring is:
(A) Causing and capping
(B) Cleat wiring
(C) Batten wiring
(D) Conduit wiring
Q.10 The type of wiring that is highly suitable for a temporary shed is
(A) Cleat wiring
(B) Wooden capping and casting wiring
C) Lead sheathed wiring
(D) Conduit wiring
Q.11 In which one of the following is flexible wire is not used?
(A) T.V
. (B) Table fan
(C) Table light
(D) Cement factory
Q.12 A house has a 5 fan of 70 W each that operate for 16 hours a day and one washing machine of 2000W that operates for 1 hour per day in the month of June. What is the energy consumption (inkWh) of the house in the month of June?
(A) 228
(B) 235.6
(C) 350
(D) 486.6
Q.13 Wiring clips are usually made of:
(A) Copper
(B) Steel
(C) Brass
(D) Aluminium
Q.14 In case of stair case wiring which type of switch is used?
(A) 2 one way switches
(B) 1 one way switches
(C) 2 two way switch
(D) 1 two way switch
Q.15 The switch unit need not be on the what type of wire
: (A) Phase
(B) Neutral
(C) Earth
(D) Any of the options
Q.16 In house wiring which type of insulation is used?
(A) Rubber
(B) P.V.C.
(C) V.I.R
. (D) Paper
Q.17 Replacement of wriing is not easy in which type of wiring….
(A) Conduit system
(B) Lead sheathed
(C) Concealed wiring
(D) Cleat system
Q.18 A building has 3 floor and each floor has 4 fans of 50 W that operates for 12 hours a day and one air conditioner of 3000 W that operates for 2 hours per day in the month of the June. Determine the energy consumption (in kWh) of the building in June.
(A) 512
(B) 525
(C) 756
(D) 504
Q.19 Which of the following is not an indoor lighting?
(A) Residence light
(B) Office light
(C) Industry light
(D) Flood light
Q.20 For what voltage levels are the screwed conduit circuit used?
(A) Less than 250V
(B) Between 250V-600V
(C) Above 600V
(D) None of these
Q.21 The factor on which earth resistance value depends on
(A) Condition of soil
(B) Moisture control of soil
(C) Temperature of soil
(D) All options are correct
Q.22 Earth wire is connected to the
(A) Appliance
(B) Ground
(C) Power house
(D) Transformer
Q.23 At what level of current flow during electric shock death is possible
(A) 1 to 180 milli amp
(B) 50 to 100 milli amp
(C) 10 to 20 milli amp
(D) 20 to 50 milli amp
Q.24 when in dry condition human body resistance is around:
(A) 100K
(B) 10K
(C) 1K
(D) Zero
Q.25 The air delivery of fan is indicated by:
(A) km3/min
(B) mm3/min
(C) m3/min
(D) cm3/min
Q.26 In wiring and winding an Abbreviation for S.W.G.is:
(A) Synthetic winding guard
(B) Simple winding gauge
(C) Standard wire gauge
(D) Single wire guard
Q.27 Calculate the January month electricity bill for a room conducting 40 W lamp working 10hours daily and unit cost is 1rupee.
(A) 13.4 Rs.
(B) 12.4 Rs.
(C) 11.4 Rs.
(D) 10.4 Rs.
Q.28 Which among these is a method of wiring?
i. Joint box
ii. Tee system
iii. Loop in system
(A) Only i
(B) Only ii
(C) Only iii
(D) i, ii & iii
Q.29 Which statement is true, with respect to the motor installation?
(A) Wood work is used for mounting switchgears
(B) All equipment used in power wiring shall be of iron clad
(C) Looping of conductors is usually made
(D) The length of flexible conduit is more than 3m
Q.30 Figure lamp shown in the picture is switched on. From the moment of switching on, how long does it take it take for the lamp to glow?
(A) 3 second because the electric current travels at the velocity of sound/3
(B) About 1 second
(C) About 0.1 second
(D) The time, practically, is zero because the velocity of the propagation of electric current
Q.31 What is an electrical schedule?
i. A list or a plan of a building providing information of number of points in each room
ii. The list of all the electrical components required for a particular room
iii. The list all the electrical components along with their prices
(A) Only i
(B) Only ii
(C) Both ii and iii
(D) None of these
Q.32 What is the factor of safety used for current ratings in a power installation?
(A) 1
(B) 1.5
(C) 1.75
(D) 2
Q.33 What is the maximum length of the flexible conduit in motor installation?
(A) Less than 1.25m
(B) Less than 2.25m
(C) Less than 3.5m
(D) Can exceed not more than 5 m
Q.34 What is meant by contingencies?
i. The list of required components are included in this category
ii. The list of vague and unforeseen items is included in this category
iii. The list of components along with their discounted prices is included in this category
(A) Only i
(B) Only ii (C) Only iii
(D) Both ii and iii
Q.35 Which material is used for wiring continous bus bar?
i. Aluminium
ii. Copper
(A) Only i
(B) Only ii
(C) Both I and ii
(D) None of these
