Power Factor Meter Control Springs Quantity
Control springs in analog measuring instruments typically provide a restoring torque, ensuring the pointer returns to zero when the input signal is removed and resisting the deflecting torque to allow for a steady reading.
However, certain types of Power Factor Meters, particularly those based on digital technology or specific electrodynamic designs, do not require physical control springs. In these instruments, the restoring force or indication mechanism is often managed by electronic circuits or derived from the magnetic field interactions themselves, making dedicated springs unnecessary for operation.
Therefore, the number of control springs provided in such Power Factor Meters is zero.
Similar Questions
- How many types of Phase Sequence Indicators are there?
A voltmeter provides the path for:
Important Questions from Indicating Instruments
Hot wire ammeters are used for measuring
Which one of the following force is not needed for the satisfactory operation of any indicating (or measuring) instrument?
Assertion (A): Shunt of an ammeter has a low resistance
Reason (R): Shunt may be connected in series or in parallel with an ammeter.Which of the following statements are correct?
A. Ultrasonic method for liquid level measurement is not preferred in industrial applications.
B. In a pH meter, the glass electrode is the reference electrode.
C. A chromatograph is used for analyzing the composition of a gas.
D. The production of Korotkoff sounds in indirect blood pressure measurement is due to pressure pulses produced due to the difference in systolic and diastolic blood pressure.
Choose the correct answer from the options given below:
- Which instrument is representing an integrating type instrument?
