Q. Accurate amplitude measurements can be made more easily than accurate phase shift measurements.

View solution

Q. A synchro transmitter receiver unit is a

View solution

Q. The transfer function of transportation lag is

View solution

Q. As the bandwidth increases, the cost of components

View solution

Q. If Nyquist plot has a encirclement of (-1 + jo) point, the system is stable if

View solution

Q. A conditionally stable system has

View solution

Q. In a pneumatic bellows

View solution

Q. Assertion (A): A large negative feedback is deliberately introduced in an amplifier to make its gain independent of variation in parameters of active device.

Reason (R): A large negative value of feedback results in a high value of return difference compared to unity which makes the feedback gain inversely proportional to the feedback factor.

View solution

Q. An electromechanical device which actuates a train of step angular movements in response to a train of input pulses on one to one basis is

View solution

Q. Assertion (A): If the Laplace transform is G(s) = 4/(s²+2s+4), the Laplaces transform of impulse response is given by C(s) = 4/(s²+2s+4)

Reason (R): The Laplace transform for an impulse function is 1.

View solution

Q. The polar plot of G(jω) = 1/jω is the negative imaginary axis.

View solution

Q. The number of branches of root locus plot is equal to

View solution

Q. The action of bellows is similar to that of

View solution

Q. For a second order system ωn is natural frequency, ωd is frequency of damped oscillations and ζ is damping factor. Then

View solution

Q. In force voltage analogy the quantity analogous to spring constant K is

View solution

Q. The log magnitude curve of factor jω is a straight line having a slope of 20 dB/decade.

View solution

Q. Time rate of change in heat energy is analogous to

View solution

Q. Assertion (A): In control system velocity error is not an error in velocity but is an error in position due to a ramp input.

Reason (R): For a type of system velocity error is zero.

View solution

Q. The shape of torque-speed curve of a two phase servo- motor mostly depends on

View solution

Q. In a lag network the input frequency is 100 fc where fc is critical frequency. The voltage gain is

View solution