defence exam ITBP (Telecommunication) Sub Inspector Mock Test 2024 Electrician and Wireman Measuring Instruments
From the following options, choose the disadvantage of electrodynamometer instruments.
1
The electrodynamometer instruments have high hysteresis error
2
The electrodynamometer instrument can only be used for AC
3
The electrodynamometer instrument can only be used for DC
4
The electrodynamometer instruments have a low torque to weight ratio