Measurements and Instrumentation - Engineering

Q1:

In a Weston synchronoscope the deflecting torque is zero when

A currents in fixed and moving coils are in phase

B currents in fixed and moving coils are out of phase by 90°

C currents in fixed and moving coils are out of phase by 60°

D none of the above

ANS:B - currents in fixed and moving coils are out of phase by 90°

No answer description is available.