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Home⇒ Engineering⇒
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. |
Q1 ⇒ For frequency domain analysis sinusoidal
signals considered have ____ frequency. differential [other wrong options] [Discuss in forum] logarithmic same any of the above |
Q2 ⇒ The feedback of the tachometer reduces
the system's both (a) and (b) [other wrong options] [Discuss in forum] time constant only gain only none of the above |
Q3 ⇒ Which of the following statements is
not nedessarily correct for open control
system ? Presence of non-linearities causes mal-functioning [other wrong options] [Discuss in forum] Input command is the sole factor
responsible for providing the control
action Less expensive Generally free from problems of non-linearities |
Q4 ⇒ A closed loop system is distinguished
from open loop system by which of the
following ? Feedback [other wrong options] [Discuss in forum] Servomechanism Output pattern Input pattern |
Q5 ⇒ Regenerative feedback implies feedback
with positive sign [other wrong options] [Discuss in forum] oscillations step input negative sign |
Q6 ⇒ The second derivative input signals
modify which of the following ? The time constant and suppress the oscillations [other wrong options] [Discuss in forum] The time constant of the system Damping of the system The gain of the system None of the above |
Q7 ⇒ The on-off controller is a ____ system. non-linear [other wrong options] [Discuss in forum] digital linear discontinuous |
Q8 ⇒ The transient response of a system is
mainly due to stored energy [other wrong options] [Discuss in forum] inertia forces internal forces friction |
Q9 ⇒ In a system zero initial condition means
that The system is at rest and no energy is stored in any of its components [other wrong options] [Discuss in forum] The system is working with zero
stored energy The system is working with zero reference signal |
Q10 ⇒ The type 1 system has ____ at the origin. simple pole [other wrong options] [Discuss in forum] no pole net pole two poles |
Q11 ⇒ ____ technique is not applicable to nonlinear
system ? Nyquist Criterion [other wrong options] [Discuss in forum] Quasi linearization Functional analysis Phase-plane representation |
Q12 ⇒ Which of the following devices is used
for conversion of co-ordinates ? Synchro-resolver [other wrong options] [Discuss in forum] Microsyn Selsyn Synchro-transforraer |
Q13 ⇒ If the gain of the critical damped system
is increased it will behave as underdamped [other wrong options] [Discuss in forum] oscillatory critically damped overdamped none of the above |
Q14 ⇒ The transfer function technique is considered
as inadequate under which of
the following conditions ? All of the above [other wrong options] [Discuss in forum] Systems having complexities and
non-linearities Systems having stability problems Systems having multiple input disturbances |
Q15 ⇒ A limit switch is used to convert mechanical motion to electrical signal [other wrong options] [Discuss in forum] limit the motion of a drive limit the value of a signal convert electrical signal to mechanical signal none of the above |
Q16 ⇒ The steady state acceleration error for
a type 1 system is infinite [other wrong options] [Discuss in forum] zero unity between zero and unity none of the above |
Q17 ⇒ ____ is preferred when a control signal
is required to have a power level higher than the capability of linear electronic
amplifiers. Amplidyne [other wrong options] [Discuss in forum] A.C. tachometer A.C. servomotor any of the above |
Q18 ⇒ LVDT is an ____ electro-mechanical device [other wrong options] [Discuss in forum] electrodynamic device electromagnetic device electrostatic device |
Q19 ⇒ The value of a node in the signal flow
graph is equal to the sum of all the incoming nodes [other wrong options] [Discuss in forum] difference of incoming and outgoing
nodes product of all the incoming nodes none of the above |
Q20 ⇒ In order to decrease the time constant
of the control system its ____ should be
decreased. inertia [other wrong options] [Discuss in forum] viscous damping steady state error damping constant |
Or |