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

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

16) In a three phase power measurement by two wattmeter method, if both the watt meters have identical reading, the power factor of the load is

Answer is:

Unity

17) What is the least count of a Vernier calliper if 9 divisions of the main scale is equal to 10 divisions on the Vernier scale and each division in the main scale is 1mm?

Answer is:

0.1 mm

18) Which of the following makes use of ferro resonance?

Answer is:

Constant voltage transformer

19) What is the use of an emitter follower circuit?

Answer is:

Impedance matching

20) Given, 1/3 + 1/4 + x = 7/12. What is the value of x ?

Answer is:

0

1
2
3
4
5
6
7