Question: A voltage of 200 V produce a deflection of 90° in a PMMC spring controlled instrument. if the same instrument is provided with gravity control, what would be the deflection?
Answer:
MCQ: A voltage of 200 V produce a deflection of 90° in a PMMC spring controlled instrument. if the same instrument is provided with gravity control, what would be the deflection?
Correct Answer:
A. 90°
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Related Questions
- 1. A spring produces a controlling torque of 16 × 10<sup>-6 </sup>Nm for a deflection of 120°. Suppose its width and length are made two times their original value and thickness is halved , the value of controlling torque for the same deflection will be :
- 2. Air friction damping should not be used where the deflecting torque in the instrument is produced due to
- 3. Fluid friction damping can be used in
- 4. Permanent magnets used in the instruments are hard core materials because
- 5. A spring produces a controlling torque of 16x10<sup>-6</sup> Nm for a deflection of 120Y. If the width and length become two times their original values and the thickness is halved, the value of controlling torque for the same deflection will be
- 6. The shunt resistance in an ammeter is usually
- 7. A voltage of 200 V produces a deflection of 90° in a PMMC spring-controlled instrument. If the same instrument is provided with gravity control, what would be the deflection?
- 8. The high torque to weight ratio in an analog indicating instrument indicates
- 9. Swamping resistance is connected
- 10. Moving-iron instruments when measuring voltages or currents
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