Control System Quiz | Control System Short Questions and Answers

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Questions
41 In a system zero initial condition means that
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
D None

Answer: The system is at rest and no energy is stored in any of its components
42 By which of the following the system response can be tested better ?
A Ramp input signal
B Sinusoidal input signal
C Unit impulse input signal
D Exponentially decaying signal

Answer: Unit impulse input signal
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43 With feedback _____ increases.
A system stability
B sensitivity
C gain
D effects of disturbing signals

Answer: system stability
44 The term backlash is associated with
A servomotors
B induction relays
C gear trains
D any of the above

Answer: gear trains
45 Is the reference input minus the primary feedback.
A Manipulated variable
B Zero sequence
C Actuating signal
D Primary feedback

Answer: Actuating signal
46 From which of the following transfer function can be obtained ?
A Signal flow graph
B Analogous table
C Output-input ratio
D Standard block system

Answer: Signal flow graph
47 The transfer function is applicable to which of the following ?
A Linear and time-in variant systems
B Linear and time-variant systems
C Linear systems
D Non-linear systems

Answer: Linear and time-in variant systems
48 A signal other than the reference input that tends to affect the value of controlled variable is known as
A disturbance
B command
C control element
D reference input

Answer: disturbance
49 Signal will become zero when the feedback signal and reference signs are equal.
A Input
B Actuating
C Feedback
D Reference

Answer: Actuating
50 The transient response of a system is mainly due to
A inertia forces
B internal forces
C stored energy
D friction

Answer: stored energy
51 Mass, in force-voltage analogy, is analogous to
A charge
B current
C inductance
D resistance

Answer: inductance
52 In thermal-electrical analogy charge is considered analogous to
A heat flow
B reciprocal of heat flow
C reciprocal of temperature
D temperature

Answer: temperature
53 In force-voltage analogy, velocity is analogous to
A current
B charge
C inductance
D capacitance

Answer: current
54 The viscous friction co-efficient, in force-voltage analogy, is analogous to
A charge
B resistance
C reciprocal of inductance
D reciprocal of conductance

Answer: resistance
55 In liquid level and electrical system analogy, voltage is considered analogous to
A head
B liquid flow
C liquid flow rate
D none of the above

Answer: head
56 In electrical-pneumatic system analogy the current is considered analogous to
A velocity
B pressure
C air flow
D air flow rate

Answer: air flow rate
57 The temperature, under thermal and electrical system analogy, is considered analogous to
A voltage
B current
C capacitance
D charge

Answer: voltage
58 The capacitance, in force-current analogy, is analogous to
A momentum
B velocity
C displacement
D mass

Answer: mass
59 Which of the following is the input to a controller ?
A Servo signal
B Desired variable value
C Error signal
D Sensed signal

Answer: Sensed signal
60 In a system low friction co-efficient facilitates
A reduced velocity lag error
B increased velocity lag error
C increased speed of response
D reduced time constant of the system

Answer: reduced velocity lag error

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