Control Systems MCQs

Option A: universal motor

Option B: single phase induction motor

Option C: two phase induction motor

Option D: three phase induction motor

Correct Answer: two phase induction motor ✔

Option A: Static friction

Option B: Backlash

Option C: Saturation

Option D: None of the above

Correct Answer: Saturation ✔

Option A: Root locus

Option B: Bode plot

Option C: Nyquist plot

Option D: None of the above

Correct Answer: Root locus ✔

Option A: no pole

Option B: net pole

Option C: simple pole

Option D: two poles

Correct Answer: no pole ✔

Option A: constant, constant

Option B: constant, infinity

Option C: zero, constant

Option D: zero, zero

Correct Answer: zero, constant ✔

Option A: Frequency response

Option B: Absolute stability

Option C: Relative stability

Option D: Time response

Correct Answer: Relative stability ✔

Option A: Nyquist Criterion

Option B: Quasi linearization

Option C: Functional analysis

Option D: Phase-plane representation

Correct Answer: Nyquist Criterion ✔

Option A: Control valve

Option B: Potentiometer

Option C: Electropneumatic converter

Option D: Servomotor

Correct Answer: Potentiometer ✔

Option A: Differential bellows and straingauge

Option B: Selsyn

Option C: Strain gauge

Option D: Strain gauge and potentiometer

Correct Answer: Differential bellows and straingauge ✔

Option A: oscillatory

Option B: critically damped

Option C: overdamped

Option D: underdamped

Correct Answer: underdamped ✔

Option A: Root locus

Option B: Bode

Option C: Nyquist

Option D: Nichols

Correct Answer: Root locus ✔

Option A: system stability

Option B: system gain

Option C: system stability and gain

Option D: none of the above

Correct Answer: system gain ✔

Option A: Displacement

Option B: Velocity

Option C: Acceleration

Option D: Any of the above

Correct Answer: Any of the above ✔

Option A: small bandwidth

Option B: negative time constant

Option C: large negative transfer function pole

Option D: none of the above

Correct Answer: large negative transfer function pole ✔

Option A: Systems having complexities and non-linearities

Option B: Systems having stability problems

Option C: Systems having multiple input disturbances

Option D: All of the above

Correct Answer: All of the above ✔

Option A: system stability

Option B: system gain

Option C: system stability and gain

Option D: none of the above

Correct Answer: system gain ✔

Option A: Induction relay

Option B: Thermocouple

Option C: LVDT

Option D: Any of the above

Correct Answer: LVDT ✔

Option A: Bode-Nyquist stability methods

Option B: Transfer functions

Option C: Root locus design

Option D: State model representatives

Correct Answer: State model representatives ✔

Option A: provide larger settling lime

Option B: delay the response

Option C: reduce steady state error

Option D: any of the above

Correct Answer: reduce steady state error ✔

Option A: pressure signal to electric signal

Option B: pressure signal to position change

Option C: electric signal to pressure signal

Option D: position change to pressure signal

Correct Answer: pressure signal to position change ✔

Option A: is independent of frequency

Option B: is inverseh’proportional to frequency

Option C: increases linearly with frequency

Option D: decreases linearly with frequency

Correct Answer: increases linearly with frequency ✔

Option A: Lead-compensation

Option B: Lag-compensation

Option C: Lead-lag compensation

Option D: None of the above

Correct Answer: Lag-compensation ✔

Option A: not necessarily stable

Option B: stable

Option C: unstable

Option D: always unstable

Correct Answer: not necessarily stable ✔

Option A: parabolic

Option B: ramp

Option C: impulse

Option D: step

Correct Answer: ramp ✔

Option A: no net pole

Option B: net pole

Option C: simple pole

Option D: two poles

Correct Answer: two poles ✔

Option A: acceleration

Option B: velocity

Option C: position

Option D: all of the above

Correct Answer: all of the above ✔

Option A: capacitance

Option B: reciprocal of capacitance

Option C: current

Option D: resistance

Correct Answer: capacitance ✔

Option A: Laplace Transform and Fourier Integral

Option B: Laplace Transform

Option C: Fourier Integral

Option D: Either B. or C.

Correct Answer: Laplace Transform and Fourier Integral ✔

Option A: no pole

Option B: net pole

Option C: simple pole

Option D: two poles

Correct Answer: simple pole ✔

Option A: low frequencies

Option B: reduced values of open loop gain

Option C: increased values of open loop gain

Option D: none of the above

Correct Answer: reduced values of open loop gain ✔

Option A: smaller damping ratio

Option B: larger damping ratio

Option C: constant damping ratio

Option D: none of the above

Correct Answer: smaller damping ratio ✔

Option A: reduced velocity lag error

Option B: increased velocity lag error

Option C: increased speed of response

Option D: reduced time constant of the system

Correct Answer: reduced velocity lag error ✔

Option A: Phase-lead

Option B: Phase-lag

Option C: Both A. and B.

Option D: Either A. and B.

Correct Answer: Phase-lead ✔

Option A: Acceleration

Option B: Speed

Option C: Speed and acceleration

Option D: Displacement

Correct Answer: Speed ✔

Option A: The range of air output as measured variable varies from maximum to minimum

Option B: The range of measured variables from set value

Option C: The range of measured variables through which the air output changes from maximum to minimum

Option D: Any of the above

Correct Answer: The range of measured variables through which the air output changes from maximum to minimum ✔

Option A: Microsyn

Option B: Selsyn

Option C: Synchro-resolver

Option D: Synchro-transformer

Correct Answer: Synchro-resolver ✔

Option A: lag at all frequencies

Option B: lag at high frequencies and lead at low frequencies

Option C: lag at low frequencies and lead at high frequencies

Option D: none of the above

Correct Answer: lag at low frequencies and lead at high frequencies ✔

Option A: at rest without any energy stored in it

Option B: working normally with reference input

Option C: working normally with zero reference input

Option D: at rest but stores energy

Correct Answer: at rest but stores energy ✔

Option A: at rest without any energy stored in it

Option B: working normally with reference input

Option C: working normally with zero reference input

Option D: at rest but stores energy

Correct Answer: at rest but stores energy ✔

Option A: reduces damping

Option B: reduces the gain margin

Option C: increases input noise

Option D: increases error

Correct Answer: increases input noise ✔

Option A: increases

Option B: minimizes

Option C: does not have any effect on

Option D: any of the above

Correct Answer: minimizes ✔

Option A: Constant current

Option B: Constant voltage

Option C: Constant current as well as constant voltage

Option D: Constant current, constant voltage and constant power

Correct Answer: Constant current ✔

Option A: Thermocouple

Option B: Potentiometer

Option C: Gear train

Option D: LVDT

Correct Answer: Thermocouple ✔

Option A: The poles of the transfer function for a set of parameter values

Option B: The bandwidth of the system

Option C: The response of a system to a step input

Option D: The frequency response of a system

Correct Answer: The poles of the transfer function for a set of parameter values ✔

Option A: Alternating current

Option B: Direct current

Option C: A.C. voltage

Option D: D.C. voltage

Correct Answer: D. D.C. voltage ✔

Option A: Signal flow graph

Option B: Analogous table

Option C: Output-input ratio

Option D: Standard block system

Correct Answer: Signal flow graph ✔

Option A: Ramp input signal

Option B: Sinusoidal input signal

Option C: Unit impulse input signal

Option D: Exponentially decaying signal

Correct Answer: Unit impulse input signal ✔

Option A: Manipulated variable

Option B: Zero sequence

Option C: Actuating signal

Option D: Primary feedback

Correct Answer: Actuating signal ✔

Option A: system stability

Option B: sensitivity

Option C: gain

Option D: effects of disturbing signals

Correct Answer: system stability ✔

A. The system is at rest and no energy is stored in any of its components
B. The system is working with zero stored energy
C. The system is working with zero reference signal

Correct Answer: The system is at rest and no energy is stored in any of its components ✔

Option A: Input

Option B: Actuating

Option C: Feedback

Option D: Reference

Correct Answer: Actuating ✔

Option A: Linear and time-in variant systems

Option B: Linear and time-variant systems

Option C: Linear systems

Option D: Non-linear systems

Correct Answer: Linear and time-in variant systems ✔

Option A: disturbance

Option B: command

Option C: control element

Option D: reference input

Correct Answer: disturbance ✔

Option A: inertia forces

Option B: internal forces

Option C: stored energy

Option D: friction

Correct Answer: stored energy ✔

Option A: voltage

Option B: current

Option C: capacitance

Option D: charge

Correct Answer: voltage ✔

Option A: velocity

Option B: pressure

Option C: air flow

Option D: air flow rate

Correct Answer: air flow ✔

Option A: current

Option B: charge

Option C: inductance

Option D: capacitance

Correct Answer: current ✔

Option A: head

Option B: liquid flow

Option C: liquid flow rate

Option D: none of the above

Correct Answer: head ✔

Option A: heat flow

Option B: reciprocal of heat flow

Option C: reciprocal of temperature

Option D: temperature

Correct Answer: temperature ✔

Option A: charge

Option B: resistance

Option C: reciprocal of inductance

Option D: reciprocal of conductance

Correct Answer: resistance ✔

Option A: charge

Option B: current

Option C: inductance

Option D: resistance

Correct Answer: inductance ✔

Option A: momentum

Option B: velocity

Option C: displacement

Option D: mass

Correct Answer: mass ✔

Option A: Error detector

Option B: Final control element

Option C: Sensor

Option D: Oscillator

Correct Answer: Oscillator ✔

Option A: It leads to slow speed of response

Option B: It leads to low relative stability

Option C: Noise is proportional to band width

Option D: None of the above

Correct Answer: Noise is proportional to band width ✔

Option A: final control element

Option B: amplifier

Option C: comparator

Option D: sensor

Correct Answer: final control element ✔

Option A: Underdamping

Option B: Overdamping

Option C: Poor stability at reduced values of open loop gain

Option D: Low-level oscillations

Correct Answer: Low-level oscillations ✔

Option A: sensor

Option B: clipper

Option C: comparator

Option D: amplifier

Correct Answer: comparator ✔

Option A: All the co-efficients can have zero value

Option B: All the co-efficients are always non-zero

Option C: Only one of the static error co-efficients has a finite non-zero value

Option D: None of the above

Correct Answer: Only one of the static error co-efficients has a finite non-zero value ✔

Option A: rises slowly

Option B: rises quickly

Option C: decays slowly

Option D: decays quickly

Correct Answer: decays quickly ✔

Option A: The system is relatively stable

Option B: The system is highly stable

Option C: The system is highly oscillatory

Option D: None of the above

Correct Answer: The system is highly oscillatory ✔

Option A: The time constant of the system

Option B: Damping of the system

Option C: The gain of the system

Option D: The time constant and suppress the oscillations

Correct Answer: The time constant and suppress the oscillations ✔

Option A: Integrator

Option B: Differentiator

Option C: Phase lead compensator

Option D: Phase lag compensator

Correct Answer: Integrator ✔

Option A: oscillations

Option B: step input

Option C: negative sign

Option D: positive sign

Correct Answer: positive sign ✔

Option A: Frequency

Option B: Loop gain

Option C: Forward gain

Option D: All of the above

Correct Answer: All of the above ✔

Option A: saturation in amplifying stages

Option B: loss of gain

Option C: vibrations

Option D: oscillations

Correct Answer: saturation in amplifying stages ✔

Option A: two phase induction motor

Option B: Three phase induction motor

Option C: direct current series motor

Option D: universal motor

Correct Answer: two phase induction motor ✔

A. reference and output
B. reference and input
F. input and feedback signal
D. output and feedback signal

Correct Answer: reference and output ✔

Option A: The order of the system

Option B: The time constant

Option C: The output for any given input

Option D: The steady state gain

Correct Answer: The output for any given input ✔

Option A: input reference signal is zero

Option B: zero stored energy

Option C: ne initial movement of moving parts

Option D: system is at rest and no energy is stored in any of its components

Correct Answer: system is at rest and no energy is stored in any of its components ✔

Option A: Band width

Option B: Overall gain

Option C: Distortion

Option D: Instability

Correct Answer: Band width ✔

Option A: Ward Leonard control

Option B: Field controlled D.C. motor

Option C: Stroboscope

Option D: Metadyne

Correct Answer: B. Field controlled D.C. motor ✔

Option A: remains unaffected

Option B: decreases by the same amount as the gain increase

Option C: increases by the sane saaaajajt as the gain decrease

Option D: decreases by the same amount as the gain decrease

Correct Answer: increases by the sane saaaajajt as the gain decrease ✔

Option A: Vernistats

Option B: Microsyns

Option C: Resolvers

Option D: Any of the above

Correct Answer: Any of the above ✔

Option A: Brain

Option B: Hands

Option C: Legs

Option D: Eyes

Correct Answer: Eyes ✔

Option A: The gain of the system should be decreased

Option B: The gain of the system should be increased

Option C: The number of poles to the loop transfer function should be increased

Option D: The number of zeros to the loop transfer function should be increased

Correct Answer: The gain of the system should be increased ✔

Option A: Auto-pilot for an aircraft

Option B: Direct current generator

Option C: Car starter

Option D: Electric switch

Correct Answer: Auto-pilot for an aircraft ✔

Option A: Servomechanism

Option B: Feedback

Option C: Output pattern

Option D: Input pattern

Correct Answer: Feedback ✔

Option A: open

Option B: closed

Option C: partially closed

Option D: any of the above

Correct Answer: open ✔

Option A: Less expensive

Option B: Recalibration is not required for maintaining the required quality of the output

Option C: Construction is simple and maintenance easy

Option D: Errors are caused by disturbances

Correct Answer: Recalibration is not required for maintaining the required quality of the output ✔

Option A: decrease

Option B: increase

Option C: be unaffected

Option D: any of the above

Correct Answer: decrease ✔

Option A: Digestive system

Option B: Perspiration system

Option C: Ear

Option D: Leg movement

Correct Answer: Perspiration system ✔

Option A: feedback

Option B: stimulus

Option C: signal

Option D: gain control

Correct Answer: stimulus ✔

Option A: computer control system

Option B: digital data system

Option C: stochastic control system

Option D: adaptive control system

Correct Answer: stochastic control system ✔

Option A: Clutch

Option B: Eyes

Option C: Needle of the speedometer

Option D: Steering wheel

Correct Answer: Needle of the speedometer ✔

Option A: the control action depends on the size of the system

Option B: the control action depends on system variables

Option C: the control action depends on the input signal

Option D: the control action is independent of the output

Correct Answer: the control action is independent of the output ✔

Option A: Closed loop system

Option B: Semiclosed loop system

Option C: Open system

Option D: None of the above

Correct Answer: Closed loop system ✔

Option A: Field controlled D.C. motor

Option B: Ward leonard control

Option C: Metadyne

Option D: Stroboscope

Correct Answer: A. Field controlled D.C. motor ✔

Option A: Output is independent of control input

Option B: Output is dependent on control input

Option C: Only system parameters have effect on the control output

Option D: None of the above

Correct Answer: Output is independent of control input ✔

Option A: Input command is the sole factor responsible for providing the control action

Option B: Presence of non-linearities causes malfunctioning

Option C: Less expensive

Option D: Generally free from problems of non-linearities

Correct Answer: Presence of non-linearities causes malfunctioning ✔

Option A: Open loop system

Option B: Closed loop system

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: Closed loop system ✔