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ISRO Technician-B
Electronic Mechanic
ISRO Technician-B Electronic Mechanic 2017
4

ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

4) Hysteresis loss in a transformer is caused by

Induced voltage in the core due to changing magnetic field

Variation in input frequency

Energy consumed in reversing the magnetism of iron core

Fluctuation in load current

Answer is:

Energy consumed in reversing the magnetism of iron core

ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

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Related ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

5) Two inductors of 32mH and 8mH are placed parallel to each other on a common core and are connected in series aiding. If the mutual inductance is 2 mH, the coefficient of coupling is

0.125

0.049

0.25

0.05

Answer is:

0.125

6) Three capacitors of value 1microFarade, 2 microFarade and 3 microFarade are connected in series across a 10V DC supply. Which of them will have more amount of charge?

1 microFarade

2 microFarade

3 microFarade

All will have same charge

Answer is:

All will have same charge

7) How many 2k x 8 ROM chips would be required to build a 16k x 8 memory system?

2

4

8

16

Answer is:

8

8) A transformer has a primary to secondary turns ratio of 1:2.50V rms, 50Hz sine wave is applied at primary winding. The peak secondary voltage will be

100V

25V

141.4V

35.35V

Answer is:

141.4V

ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

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