How many essential forces are required for the satisfactory operation of an indicating instrument?
How many essential forces are required for the satisfactory operation of an indicating instrument?
Right Answer is:
Three
SOLUTION
An indicating instrument requires three essential torques/forces to function correctly:
- Deflecting torque
- Controlling torque
- Damping torque
- Deflecting torque moves the pointer.
- Controlling torque opposes the deflecting torque and brings the pointer back to zero when there is no measurement.
- Damping torque minimizes oscillations of the pointer so it settles quickly