Test: Automatic Control Systems - 7 - Electrical Engineering (EE) MCQ

For Bode plot of (1 + jωT) has

If ΔP is pressure difference, A is area of each flat surface, K is stiffness and Δx is displacement of movable surface from reference of bellows, then

The open loop transfer function of a system is . If the frequency at the intersection of - 40 dB/decade line and 0 dB line is ω, then

For low frequencies such that , the log magnitude of factor is 0 dB.

Assertion (A): The closeness of G(jω) locus to (- 1 + j0) point can be used as a measured of margin of stability.

Reason (R): When the G(jω) locus comes close to encircling (- 1 + j0) point the system becomes oscillatory.

For the system of the given figure |G(jω)| = 0 dB at ω =

The capacitance of a gas pressure vessel is defined as

The slope of log magnitude curve changes by - 40 dB/decade at a certain frequency and the error between asymptote and actual curve is positive. This means that

A system has high gain and phase margin. The system is

For the transfer function , the polar plot a is

A network has . Then

A proportional controller is basically

The given figure shows log magnitude versus ω plots of a system for different values of gain. For this system

The purpose of series quadrature windings in amplidyne is to

For the transport lag G(jω) = e^-jωT, the phase angle

In classical analogue, torque is analogous to

The pole zero plot of the given figure is for

For the function G(s) = the poles are at

Which dc servomotor has minimum inertia?

Gas flow resistance is defined as

Examine the following statements

1. A small size hydraulic actuator can develop good torque.
2. It is easy to maintain a hydraulic system leak proof.
3. Both linear and rotatary hydraulic actuators are available.
4. Hydraulic power is more easily available than electric power.

The given figure shows a constant current source driving a parallel RC circuit. It is equivalent to