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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. |
Q61 ⇒ Regenerative feedback implies feedback
with positive sign [other wrong options] [Discuss in forum] oscillations step input negative sign |
Q62 ⇒ The frequency range is specified by
which of the following ? Band width [other wrong options] [Discuss in forum] Peak value Resonance Modulation index |
Q63 ⇒ The root loci of a system has three
asymptotes the system can have all of the above [other wrong options] [Discuss in forum] five poles and two zeros four poles and one zero three poles |
Q64 ⇒ In pneumatic instrumentation systems
the pressure of compressed air used is
aro und 1.4 bar [other wrong options] [Discuss in forum] 1 bar 2.5 bar 5.5 bar |
Q65 ⇒ Bimetallic thermostat is ____ controller. on-off [other wrong options] [Discuss in forum] zero-term one-term two-term |
Q66 ⇒ ____ can measure pressure error. Strain gauge [other wrong options] [Discuss in forum] SeIsyn Potentiometer Any of the above |
Q67 ⇒ In a system nonlinearity may be introduced
by which of the following ? Any of the above [other wrong options] [Discuss in forum] Saturation effects in amplifiers End positions in detectors Backlash in gears |
Q68 ⇒ A 'drag cup' type motor has which of the
following ? Low inertia [other wrong options] [Discuss in forum] Low starting torque Low power rating Low damping None of the above |
Q69 ⇒ A synchro is employed to convert an angular position of a shaft into an electrical signal [other wrong options] [Discuss in forum] to amplify low frequency signals to accelerate a rotating shaft to convert linear motion into angular motion |
Q70 ⇒ An ideal transformer should have an infinite resolution [other wrong options] [Discuss in forum] zero resolution resolution proportional to the reference voltage a fine wire |
Q71 ⇒ Which of the following methods may be
used to minimize the loading in potentiometers
? Non-linearity may be introduced [other wrong options] [Discuss in forum] Linearity may be introduced Reference voltage may be increased Length of wire may be increased |
Q72 ⇒ With the knowledge of state space representation
the transfer function of the
system can be determined completely [other wrong options] [Discuss in forum] can be determined partly cannot be determined none of the above |
Q73 ⇒ The term confirmity is associated with
which of the following ? Potentiometer [other wrong options] [Discuss in forum] Transformer Magnetic amplifier Selsyn |
Q74 ⇒ A minor loop feedback compensation
increases the steady state error by a
factor which is ____ constant [other wrong options] [Discuss in forum] decaying exponentially directly proportional to rate feedback inversely proportional to rate feedback |
Q75 ⇒ For transistor amplifier circuits the
common emitter configuration is used
because it gives both (a) and (b) [other wrong options] [Discuss in forum] high power gain high voltage gain none of the above |
Q76 ⇒ Which of the following statements is
incorrect ? Derivative output compensation will increase settling time [other wrong options] [Discuss in forum] The integral error compensation
changes a second order system into
a third order system For type-1 system, with unit ramp input, the steady state velocity constant is finite For type-1 system the unit step input, the steady state error is zero |
Q77 ⇒ ____ has tendency to oscillate. Closed loop systenri [other wrong options] [Discuss in forum] Open loop system Both (a) and (b) Neither (a) nor (b) |
Q78 ⇒ By which of the following the control
action is determined when a man walks
along a path ? Eyes [other wrong options] [Discuss in forum] Brain Hands Legs |
Q79 ⇒ ____ is an open loop control system. Field controlled D.C. motor [other wrong options] [Discuss in forum] Ward Leonard control Stroboscope Metadyne |
Q80 ⇒ Which of the following statements is
correct for a system with gain margin
close to unity or a phase margin close
to zero ? The system is highly oscillatory [other wrong options] [Discuss in forum] The system is relatively stable The system is highly stable None of the above |
Or |