Wireman 2nd year mcq

Wireman – Semester 4 Module 8 – Estimation and costing of wiring

226 : Which pump is used to lift water from a deep bore well?
A : Reciprocating pump
B : Rotary pumps
C : Centrifugal pump
D : Submersible pump

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227 : Which is the cross sectional area of neutral bus bar compared to phase busbar above 200 A capacity?
A : Half of phase busbar
B : 2 times of phase busbar
C : 1.5 times of phase busbar
D : Same as phase busbar

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228 : Which factor determines the size of wire used for industrial wiring?
A : Type of wiring distance
B : Distance from source
C : Line voltage
D : Load current

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229 : Which type of the bus bar system is illustrated?

A : Horizontal bus system
B : Vertical bus system
C : 8 bar system
D : Bus bar trunking system

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230 : Which is the distance of saddles to be fixed from the centre of bends (or) couplings in metal circuit wiring?
A : 60cm
B : 50cm
C : 30cm
D : 15cm

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231 : Which is the alpha numberic rotation for apparatus AC 3 phase system?
A : A,B,C,N
B : X,Y,Z,N
C : U,V,W,N
D : A,B,C,N

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232 : What is the name of distribution system used in industries?

A : Bus bar suspended from roof
B : Bus bar supported from ground
C : Vertical mounted bus bar
D : Bus duct system

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233 : Which is the minimum size of copper conductor used for power wiring in commercial wiring as per IE rule?
A : 1 mm2
B : 1.5 mm2
C : 2.0 mm2
D : 2.5 mm2

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234 : Which is the name of position marked as x?

A : Height
B : Horizondal run
C : Vertical run
D : Down drop

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235 : Which is the minimum size of PVC conduit used in government installations prescribed by CPWD?
A : 20mm
B : 16mm
C : 19mm
D : 32mm

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236 : What is the first step taken during preparation of estimating the material required for any type of wiring installation?
A : Take the lay out
B : Purchase accessories for testing
C : Prepare instruments for testing
D : Purchase cables testing

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237 : Which load is to be connected from stand by generator set in the event of failure of mains?
A : Garden lighting
B : Portico lighting
C : Fire lift and water pumps
D : Playing area lighting

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238 : Which is the recommended height of energy meter to be installed from floor level in commercial wiring as per IE rule?
A : Not less than 1m
B : Not less than 1.5m
C : Not less than 2m
D : Not less than 2.5m

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239 : Which is to be considered before the selection of conductor, protective devices and switch gear in commercial wiring?
A : Diversity factor
B : Type of wiring
C : Place of wiring
D : Climatic conditions

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240 : Where the location of main switch in a domestic wiring installation?
A : Near to load centre
B : Near to termination of service line
C : Out side wall of building
D : Near main door

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241 : Which cable is selected for service connection and outdoor applications?
A : PVC insulated PVC sheathed
B : PILC cable
C : TRS sheathed
D : Lead alloy sheathed

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242 : Which type of wiring system used in multistoried building?
A : Tree system
B : Bus bar system
C : Ring main system
D : Distribution board system

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243 : Which is the number of earth leads shall be provided along with vertical runs of rising mains?
A : 1
B : 2
C : 3
D : 4

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244 : What is the name of distribution system?

A : Ring main system
B : Distribution board system
C : Rising main system
D : Bus champer system

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245 : Which is the permissible power load in a sub circuit as per IE rule?
A : 800 Watts
B : 1200 Watts
C : 2400 Watts
D : 3000 Watts

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246 : What is the formula to calculate the voltage drop in 3 phase circuits ? (If I=line current R=Resistance of one core)
A : √3 IR
B : I²R
C : IR
D : 3 IR

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247 : Which is the permissible voltage drop at the point of consumer on high and extra high voltage as per IE rule?
A : 3%
B : 5%
C : 8.50%
D : 12.50%

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248 : Which is the height of distribution boards to be fixed from floor level as per IE rule?
A : Not more than 1m
B : Not less than 1.5m
C : Not less than 2m
D : Not less than 2.5m

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249 : Which type of distribution is used in workshop wiring?
A : Raising mains
B : Bus chamber
C : Tree system
D : Ring main system

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250 : Which is the thickness of metal conduit pipe for conduit size up to 32 mm as per IE Rule?
A : 20 SWG
B : 19 SWG
C : 32 SWG
D : 16 SWG

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251 : Which helps both wireman and consumer to select the material according to commercial practice, cost and requirement?
A : Drawing
B : Specification of material
C : Layout
D : Estimation

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252 : Which is the reason for using bus bar system in workshop for power distribution?
A : Occupy less space
B : Give neat appearance
C : Easy addition and alterations
D : Withstand over load

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253 : Which method of wiring consumes less quantity of wire/cable?
A : Joint box method
B : Loop in back method
C : Loop in using two plate ceiling rose andswitch
D : Loop in method using three plate ceiling rose

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254 : Which accessory is represented by the BIS symbol?

A : Combined switch and socket outlet 16A
B : Interlocking switch and socket 6A
C : Interlocking switch and socket 16A
D : Socket outlet 16A

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255 : Which wire is to be connected through switch as per IE rule?
A : Phase line
B : Neutral
C : Earth
D : Ground

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