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

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

26) Holes are provided in the aluminium disc of an energy meter to

Answer is:

Prevent creeping

27) As per Indian electricity standard, what is the allowable voltage variation in low or medium voltage supply

Answer is:

6%

28) According to which law, the back emf in DC motor opposes the applied voltage

Answer is:

Lenz law

29) The value of 97 x 97 + 2 x 97 x 3 + 9 is

Answer is:

10000

30) An ideal transformer has 2000 turns on its primary and 200 turn on its secondary. The driving voltage in the primary side is 100 V. A 5 Ohm resistor is connected to the secondary. Calculate the secondary current.

Answer is:

2A

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9