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

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

1) The electrolyte used in Nickel-Cadmium rechargable cell is

Answer is:

Aqueous solution of potassium hydroxide

Explanation:

.

2) The maximum safe working voltage for a series combination of two capacitors of rating 2 microFarad/10V and 4 microFarad/20V is

Answer is:

15 V

3) A series RLC circuit is connected to the 240V, 50Hz line. If R=10 ohms, L=20 mH and C=20 microFarade, then the resulting reactance of the circuit is approximately

Answer is:

-152.72 ohm

4) Hysteresis loss in a transformer is caused by

Answer is:

Energy consumed in reversing the magnetism of iron core

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

Answer is:

0.125