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Control systems
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ The Bode plot is used to analyse which
of the following ? Minimum phase network [other wrong options] [Discuss in forum] Lag lead network Maximum phase network All phase network |
Q22 ⇒ A servomechanism usually consist of all of the above [other wrong options] [Discuss in forum] error actuated signal power amplifier mechanical output |
Q23 ⇒ Nyquist criterion is used to find which
of the following ? Both (a) and (b) [other wrong options] [Discuss in forum] Absolute stability Relative stability None of the above |
Q24 ⇒ In radars the control systein used is discrete data control system [other wrong options] [Discuss in forum] relay control system continuous control system none of the above |
Q25 ⇒ By which of the following the order of
the systein can be determined ? Number of poles at the origin [other wrong options] [Discuss in forum] The number of stable roots of the
system Either of the above None of the above |
Q26 ⇒ Which of the following statements is
incorrect for root locus technique ? None of the above [other wrong options] [Discuss in forum] It is most useful for single-input
single-output systems It provides the pattern of movement of closed loop holes when open loop gain varies It is used to obtain closed-loop pole configuration from open-loop poles and zeros |
Q27 ⇒ A pneumatic amplifier ____ amplifies & differential pressure [other wrong options] [Discuss in forum] amplifies flow amplifies change in air volume any of the above |
Q28 ⇒ Zero percent porportional band means it is an on-off controller [other wrong options] [Discuss in forum] no change in control output no change in measured variable any of the above none of the above |
Q29 ⇒ Drag type' motors generally have ____ low inertia [other wrong options] [Discuss in forum] high inertia low starting torque low damping |
Q30 ⇒ By use of which of the following the system
damping factor can be reduced ? Rate feedback [other wrong options] [Discuss in forum] Integral feedback Positive feedback Negative feedback |
Q31 ⇒ The velocity lag error in the type-1 system
is inversely proprotional to gain constant [other wrong options] [Discuss in forum] independent of gain constant directly proportional to gain constant inversely proportional to band width of the system |
Q32 ⇒ Which of the following materials is used
for making a stator of a synchro ? Laminated silicon steel [other wrong options] [Discuss in forum] Cast iron Copper Cadmium alloy None of the above |
Q33 ⇒ The resoiution of potentiometer should
be infinity [other wrong options] [Discuss in forum] very high low zero |
Q34 ⇒ For a linear transfer function of the
variable the transfer function of the
system does not change [other wrong options] [Discuss in forum] changes has no relation at all depends on other factors also |
Q35 ⇒ Which of the following types of motor
has printed windings ? Motor with disc shaped rotor [other wrong options] [Discuss in forum] Modular motor Motor with ferromagnetic rotor None of the above |
Q36 ⇒ High power amplification is achieved
by the use of amplidyne [other wrong options] [Discuss in forum] A.C. amplifier magnetic amplifier silicon controlled rectifier none of the above |
Q37 ⇒ For which of the following reasons nonlinearities
are introduced ? Both (a) and (b) [other wrong options] [Discuss in forum] To simplify the system To achieve special characteristics None of the above |
Q38 ⇒ Which of the following statements is
incorrect in respect of closed loop control
system ? A D.C. closed loop control system has modulated wave forms [other wrong options] [Discuss in forum] The source power of the feedback
system is modulated by error signal Use of feedback minimizes the effects of disturbing signal With feedback system the transient response decays more quickly |
Q39 ⇒ There is a ____ between the two nodes
of signal flow graph. branch [other wrong options] [Discuss in forum] link tree none of the above |
Q40 ⇒ In open loop system the control action is independent of the output [other wrong options] [Discuss in forum] the control action depends on the
size of the system the control action depends on system variables the control action depends on the input signal |
Or |