Transport lag usually exists in
Transport lag usually exists in
The distance of poles from origin depends on
The distance of poles from origin depends on
If poles lie in first quadrant, damping ratio is
If poles lie in first quadrant, damping ratio is
The relative stability of a system is given by
The relative stability of a system is given by
A lag compensator
A lag compensator
The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.
The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.
Integral control action
Integral control action
If the poles lie in second quadrant, damping ratio is
If the poles lie in second quadrant, damping ratio is
The sensor generally used in incremental optical encoder is
The sensor generally used in incremental optical encoder is
M circles are symmetrical with respect to
M circles are symmetrical with respect to
Which of the following is used to obtain output position in a position control system?
Which of the following is used to obtain output position in a position control system?
Which of the following can be used as a rotating amplifier in a control system?
1. Amplidyne
2. Separately excited dc generator
3. Synchro
4. Self excited dc generator
Which of the following can be used as a rotating amplifier in a control system?
1. Amplidyne
2. Separately excited dc generator
3. Synchro
4. Self excited dc generator
A system is highly oscillatory if
A system is highly oscillatory if
In Bode plots the frequency at which two asymptotes meet is called corner frequency.
In Bode plots the frequency at which two asymptotes meet is called corner frequency.
Nyquist stability criterion uses open loop frequency response characteristics.
Nyquist stability criterion uses open loop frequency response characteristics.
Magnetic amplifier is used for
Magnetic amplifier is used for
Which dc servomotor requires strongest permanent magnet?
Which dc servomotor requires strongest permanent magnet?
Which of the following is open loop system?
Which of the following is open loop system?
A lead compensator
A lead compensator
The addition of a pole to the open loop transfer function pulls the root locus
The addition of a pole to the open loop transfer function pulls the root locus
Which of the following is correct?
Which of the following is correct?
The permanent magnet field system of brushless dc servo- motor is generally on
The permanent magnet field system of brushless dc servo- motor is generally on
In the field controlled motor the entire damping comes from
In the field controlled motor the entire damping comes from
In a simple on-off controller with differential gap, the magnitude of differential gap determines
In a simple on-off controller with differential gap, the magnitude of differential gap determines
In control systems the output of sensor usually, is
In control systems the output of sensor usually, is
For any transfer function, the constant phase angle loci are
For any transfer function, the constant phase angle loci are
DC tachogenerator can be used in
DC tachogenerator can be used in
Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.
Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.
In force current analogy, displacement x is analogous to
In force current analogy, displacement x is analogous to
A conditionally stable system is stable for the value of gain between two critical values. It is unstable if
A conditionally stable system is stable for the value of gain between two critical values. It is unstable if
Which of the following features is not associated with Nichols chart?
Which of the following features is not associated with Nichols chart?
The poles with greater displacement from the real axis correspond to
The poles with greater displacement from the real axis correspond to
Which control action can never be used alone?
Which control action can never be used alone?
For type 1 system the velocity lag error is
For type 1 system the velocity lag error is
Robotic manipulator arms mostly use
Robotic manipulator arms mostly use
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.
For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.
Nichols chart consists of
Nichols chart consists of
Nichol’s chart is symmetric about – 180° axis.
Nichol’s chart is symmetric about – 180° axis.
Bandwidth is proportional to speed of response.
Bandwidth is proportional to speed of response.
In a two phasor servomotor, the direction of rotation of the rotating field depends on
In a two phasor servomotor, the direction of rotation of the rotating field depends on
In force current analogue, mechanical mobility is analogous to
In force current analogue, mechanical mobility is analogous to
The effect of adding poles and zeros can be determined quickly by
The effect of adding poles and zeros can be determined quickly by
If any term in the first column of a Routh array becomes zero, then
If any term in the first column of a Routh array becomes zero, then
Temperature is analogous to
Temperature is analogous to
In root locus analysis the breakaway and break in points
In root locus analysis the breakaway and break in points
Lag compensation permits a high gain at low frequencies.
Lag compensation permits a high gain at low frequencies.
