Wireman – Semester 4, Module 3 - Distribution and protection

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Common for Wireman Trade 2nd Year

NAME *

NAME OF THE ITI *

MOBILE NUMBER *

1 : Which distribution system is used for domestic light and appliances? *

2 points

A : Single phase two wire

B : Three phase three wire

C : Two phase Two wire

D : Single Phase one wire

2: What is a interconnected distribution system? *

2 points

A : Distributor gets supply from one source

B : Distributor gets supply from two locations

C : Distributor gets supply direct from substation

D : Distributor gets supply from more than two locations

3 : What is service main? *

2 points

A : The cable carrying supply from distributor to meter of consumer

B : The cable carrying supply from meter to load

C : The cable carrying supply from generating station to transformer

D : The cable carrying supply from transformer to over head line

4: What is feeder? *

2 points

A : The line carrying supply from generating station to distributors

B : The cable carrying supply from transformer to over head lines

C : The cable carrying supply from meter to load

D : The cable carrying supply from distributor to meter of consumer

5: What is distributor? *

2 points

A : The conductors providing supply to transmission lines.

B : The conductors providing supply to distribution line

C : The conductors providing supply to service main

D : The conductors providing supply to a power transformer

6: Where steel towers are used? *

2 points

A : Transmission lines

B : Primary distribution lines

C : Secondary distribution lines

D : For telephone lines

7 : Which is used to carry higher voltage for long distance transmission? *

2 points

A : Feeder

B : Distributor

C : Service main

D : Service wire

8 : Which conductor is used in over head lines? *

2 points

A : Copper conductor

B : Aluminium Conductor

C : ACSR Conductor

D : Steel Conductor

9 : What is distribution system? *

2 points

A : Supply from substation to consumer

B : Supply from generating station to substation

C : Generation of power in a generating station.

D : Supply from generating station to transmission line

10: How the size of feeder is decided? *

2 points

A : On the basis of line voltage

B : On the Basis of current of the line

C : On the basis of length of line

D : On the basis of height of line

11 : Where underground distribution system is preferred? *

2 points

A : Open areas

B : In forests

C : Highly populated area

D : Hill areas

12: What is the advantage of underground distribution system? *

2 points

A : High installation cost

B : Difficult to trace the faults

C : Lower life span

D : Good appearance

13 : Which is a part of over head line? *

2 points

A : Lead sheath

B : Stay wire

C : Armouring

D : Cable trench

14: Which is a line protecting device? *

2 points

A : Bus bar

B : Isolating switch

C : Insulator

D : Circuit Breaker

15 : Which type of isolater consists of four arms and at the end of arm silver plated copper contacts are fixed? *

2 points

A : Single brake isolater

B : Double brake isolater

C : Pantograph isolater

D : Bus side isolater

16 : Which motor is fitted with single phasing relay? *

2 points

A : Single Phase motors

B : DC shunt motor

C : DC series motor

D : Three phase motors

17: Which is the name of relay used to protect turbo generators from internal fault? *

2 points

A : Earth fault relay

B : Inverse time relay

C : Under voltage relay

D : Differential relay

18 : Which type of distribution is used in residential area? *

2 points

A : Single phase two wire

B : Three phase three wire

C : Two phase Two wire

D : Three phase four wire

19 : Which distribution system is energised by more than two generating station? *

2 points

A : Radial system

B : Ring main system

C : Inter connected system

D : DC system

20 : Which supply can provide supply for 3 phase as well as single phase load? *

2 points

A : Single phase two wire

B : Two phase two wire

C : Three phase three wire

D : Three phase four wire

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