Q. Assertion (A): The steady state response, of a stable, linear, time invariant system, to sinusoidal input depends on initial conditions.

Reason (R): Frequency response, in steady state, is obtained by replacing s in the transfer function by jω

View solution

Q. Bode magnitude plot is drawn between

View solution

Q. First column elements of Routh's tabulation are 3, 5, -3/4, 1/2, 2. It means that there

View solution

Q. When a unit step voltage drives a lag network the output

View solution

Q. A system has its two poles on the negative real axis and one pair of poles lies on jω axis. The system is

View solution

Q. In a minimum phase system

View solution

Q. A stepper motor is

View solution

Q. In a two phase ac servomotor rotor resistance is R and rotor reactance is X. The speed curve will be linear if

View solution

Q. From the noise point of view, bandwidth should

View solution

Q. The primary function of lag compensator is to provide sufficient

View solution

Q. The polar plot of a transfer function passes through (-1, 0) point. The gain margin is

View solution

Q. For a quadratic factor in transfer function the phase angle is not a function of damping factor.

View solution

Q. The current rating of dc tachogenerator is usually

View solution

Q. In a second order system, the time constant t of exponential envelopes depends

View solution

Q. If feedback factor is β the overall gain of a closed loop system is approximately equal to

View solution

Q. In control systems the magnitude of error voltage

View solution

Q. The slope of log-magnitude asymptote changes by - 40 dB/ decade at a frequency ω₁. This means that

View solution

Q. For a factor 1/(jω)² in the transfer function, the log magnitude plot

View solution

Q. The frequency at which magnitude of closed loop frequency response is 3 dB below its zero frequency value is called critical frequency.

View solution

Q. The transfer function 1/(1+jωT) has the characteristics of high pass filter.

View solution