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ISRO
ISRO Technician-B
Electrician
ISRO Technician-B Electrician 2019
2

ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

2) Derivative of -sin x with respect to - cot x is

"cot x"

"tan x"

"-cot x"

"-tan x"

Answer is:

"-cot x"

ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

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Related ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

3) Inter poles in DC machines are used to

Reduce the effect of armature reaction

Reduce the effect of cogging

Reduce the effect of crawling

None of these

Answer is:

Reduce the effect of armature reaction

4) Which motor is used for power factor improvement?

Induction motor

Under exited synchronous motor

DC series motor

Over exited synchronous motor

Answer is:

Over exited synchronous motor

5) Form factor is the ratio of

Average value to peakvalue

Peak value to average value

Average value to RMS value

RMS value to average value

Answer is:

RMS value to average value

6) The condition for maximum efficiency in transformer is

Copper loss is equal to zero

Core loss is equal to zero

Copper loss is equal to core loss

Both (A) and (B)

Answer is:

Copper loss is equal to core loss

ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

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