Control Systems and its Applications

This is an MCQ-based quiz on Control Systems.

This includes Summing, Differential, Take-off, Source node, Sink node, Chain node, and Main node.

Start Quiz

Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output?

Input signal Output signal Error signal Feedback signal

Which among the following is not an advantage of an open loop system?

Simplicity in construction & design Easy maintenance Rare problems of stability Requirement of system recalibration from time to time

Which among the following represents an illustration of closed loop system?

Automatic washing machine Automatic electric iron Bread toaster Electric hand drier

How is an output represented in the control systems?

r(t) c(t) x(t) y(t)

In an octave frequency band, the ratio of f2 / f1 is equivalent to ________

2 4 8 10

Conventional control theory is applicable to ______ systems

SISO MIMO Time varying Non-linear

Which time is responsible for introducing an error in the temperature regulation of applications associated with ON-OFF controllers?

Rise time Dead time Switching time Decay time

Which among the following controls the speed of D.C. motor?

Galvanometer Gauss meter Potentiometer Tachometer

Which among the following are the elements of rotational motion?

Mass, Spring, Friction Inertia, Damper, Spring Work, Energy, Power Force, Pressure, Viscocity

In P-D controller, the derivative action plays a significant role in increasing _______ of response.

Time Distance Speed Volume

In addition to storage instructions, PLC controls __________

Logic sequence timing Counting Arithmetic operations All of the above

Which among the following are the interconnected units of state diagram representation?

Scalars Adders Integrators All of the above

Due to an addition of pole at origin, the polar plot gets shifted by ___ at ω = 0?

-45° -60° -90° -180°

In closed loop control system, what is the sensitivity of the gain of the overall system, M to the variation in G?

G/1GH 1/1+GH G/1+G 1/1+G

The input signals to control systems are not known fully ahead of time, the characteristics of control system which suddenly strain a control system are:

Constant velocity and acceleration Sudden shock Sudden change All of the mentioned

The open loop transfer function of the feedback control system is given by G(s) = K(s+3)/s(s+4)2(s+5)(s+6). The number of asymptotes and the centroid of asymptotes of the root loci of closed loop system is?

-4 and (-4,0) 4 and (-4,0) -3 and (-12,0) 3 and (-12,0)

Feedback control system is basically ______________

Band pass filter Band stop filter High pass filter Low pass filter

Which unit is adopted for magnitude measurement in Bode plots?

Degree

Decimal

Decibel

Deviation

Which notation represents the feedback path in closed loop system representation?

b(t)

c(t)

e(t)

r(t)

The characteristic equation of a control system is given by s(s+4)(s2+2s+s) + k(s+1) = 0. What are the angles of the asymptotes for the root loci at k=0?

0°, 180°, 300°

0°, 120°, 240°

60°, 180°, 300°

120°, 180°, 240°

Quiz/Test Summary

Title: Control Systems and its Applications

Questions: 20

Contributed by:

Diego Tue, May 24, 2022 07:18 AM UTC

Book a Trial Class