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ISRO
ISRO Technician-B
Electrician
ISRO Technician-B Electrician 2015
12

ISRO Technician-B Electrician Question Paper - 2015 (Set - 1) with Answer Key

12) The transformer oil used in transformer provides

insulation and cooling

cooling and lubrication

insulation and lubrication

insulation, cooling and lubrication

Answer is:

insulation and cooling

ISRO Technician-B Electrician Question Paper - 2015 (Set - 1) with Answer Key

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Related ISRO Technician-B Electrician Question Paper - 2015 (Set - 1) with Answer Key

13) The main purpose of performing open circuit test at rated voltage is to measure

copper loss

core loss

total loss

insulation resistance

Answer is:

core loss

14) Buchholz relay is a

voltage sensitive device

current sensitive device

frequency sensitive device

gas actuated device

Answer is:

gas actuated device

15) Transformers are rated in

KVAR

KVA

KV

KW

Answer is:

KVA

16) The internal resistance of an ammeter should be

very small

medium

high

infinity

Answer is:

very small

ISRO Technician-B Electrician Question Paper - 2015 (Set - 1) with Answer Key

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