Rajasthan Polytechnic Third Year Paper 2016 – Fundamentals of Control System

Rajasthan Polytechnic Third Year Paper 2016 – Fundamentals of Control System

Transfer function of a system is used to calculate which of the following?
(a) The order of the system
(b) The time constant
(c) The output for any given input
(d) The steady state gain

The transfer function is applicable to which of the following system?
(a) Linear and time variant system
(b) Linear and time invariant system
(c) Linear system
(d) Non-linear system

Laplace transform of the output response of a linear system is the system transfer function when the input is
(a) a step signal
(b) a ramp signal
(c) an impulse signal
(d) a sinusoidal signal

The torque-speed characteristics of A.C. servomotor is largely affected by
(a) voltage
(b) R/X and speed
(c) X/R
(d) Supplied frequency

A synchro transmitter receiver unit is a
(a) Two phase a.c. device
(b) Three phase a.c. device
(c) d.c. device
(d) single phase a.c. device

In case of synchro detector, the electrical zero position of control transformer is obtained when angular displacement between two rotor is
(a) zero degree
(b) 45 degree
(c) 90 degree
(d) 180 degree

In a field controlled d.c, servometer the entire damping comes from
(a) The armature resistance
(b) The back e.m.f
(c) Motor friction and damping
(d) Field resistance

The type 0 system has _______at the origin
(a) No pole
(b) Simple pole
(c) Two pole
(d) One pole

In case of type-I system, steady state error for parabolic input is
(a) 1
(b) Infinity
(c) zero
(d) 10

First column element of the Routh’s table are 3,5, -3/4, 1/2, 2 respectively. It means that
(a) one root is in the left half of S plane
(b) two roots are in the left half of S plane
(c) two roots are in the right half of S Plane
(d) one root is in the right half of S plane

A system has 12 poles and 2 zeros. Its high frequency asymptotes in its magnitude bode plot has a slope (decibel per decade) of
(a) -200
(b) -240
(c) -280
(d) -320

The polar plot of a transfer function passes through critical point (-1,0), its gain margin will be
(a) Zero
(b) -1 dB
(c) 1 dB
(d) Infinite dB