Question:
The instrument that does not have any restoring torque is
The instrument that does not have any restoring torque is
Show Hint
Restoring torque is absent in moving iron instruments; their response relies on magnetic interaction.
Updated On: May 26, 2025
- Moving iron instrument
- Flux meter
- Ballistic galvanometer
- D’arsonval Galvanometer
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Moving iron instruments do not rely on a restoring torque provided by springs. Instead, the deflection occurs due to the attraction or repulsion of a soft iron piece in a magnetic field, and the deflection is opposed by the mechanical stiffness of the system.
Was this answer helpful?
0
0
Top TS PGECET Instrumentation Engineering Questions
- The energy stored in a capacitor \( C \) when a voltage \( V \) exists across it is:
- The mechanical force per unit charge at a given point is called:
- Force on a current-carrying conductor placed in a magnetic field is given by:
- "Whenever magnetic flux linked with a closed coil changes, an induced emf is setup in the coil and lasts as long as the change in magnetic flux continues." This is:
- Internal resistance of an ideal voltage source is:
View More Questions
Top TS PGECET Electrical and Electronic Measurements Questions
Top TS PGECET Questions
- If \( P = \begin{pmatrix} 1 & 1 & 1 \\ 0 & 1 & 2 \\ 0 & 0 & 1 \end{pmatrix} \) is the modal matrix of \( A = \begin{pmatrix} 1 & 1 & 0 \\ 0 & 2 & 2 \\ 0 & 0 & 3 \end{pmatrix} \) then the sum of all the elements of \( P^{-1}AP \) is
- If the system of equations \( kx + y + z = k - 1 \), \( x + ky + z = k - 1 \), and \( x + y + kz = k - 1 \) has infinite solutions, then \( k \) is
- The value of the integral \( \int_C (2xy - x^2) \, dx + (x^2 + y^2) \, dy \) where \( C \) is the boundary of the region enclosed by \( y = x^2 \) and \( y^2 = x \), described in the positive sense, is
- Let \( f(x) = \log x \). The number \( C \) strictly between \( e^2 \) and \( e^3 \) such that its reciprocal is equal to \( \frac{f(e^3) - f(e^2)}{e^3 - e^2} \) is
- The solution of the differential equation \( (D^2 + 2)y = x^2 \) is
View More Questions