Q.1
______________ is not a final control element.
  • a) Control valve
  • b) Potentiometer
  • c) Electro-pneumatic converter
  • d) Servomotor
Q.2
Which of the following is the definition of proportional band of a controller?
  • a) The range of air output as measured variable varies from maximum to minimum
  • b) The range of measured variables from set value
  • c) The range of measured variables through which the air output changes from maximum to minimum
  • d) All of the mentioned
Q.3
In pneumatic control systems the control valve used as final control element converts
  • a) Pressure signal to electric signal
  • b) Pressure signal to position change
  • c) Electric signal to pressure signal
  • d) Position change to pressure signal
Q.4
Pressure error can be measured by which of the following?
  • a) Differential bellows and strain gauge
  • b) Selsyn
  • c) Strain gauge
  • d) Strain gauge and potentiometer
Q.5
Which of the following devices is used for conversion of co-ordinates?
  • a) Microsyn
  • b) Selsyn
  • c) Synchro-resolver
  • d) Synchro-transformer
Q.6
The effect of error damping is to
  • a) Provide larger settling lime
  • b) Delay the response
  • c) Reduce steady state error
  • d) None of the mentioned
Q.7
Technique gives quick transient and stability response
  • a) Root locus
  • b) Bode
  • c) Nyquist
  • d) Nichols
Q.8
A phase lag lead network introduces in the output
  • a) Lag at all frequencies
  • b) Lag at high frequencies and lead at low frequencies
  • c) Lag at low frequencies and lead at high frequencies
  • d) None of the mentioned
Q.9
Which of the following is the non-linearity caused by servomotor?
  • a) Static friction
  • b) Backlash
  • c) Saturation
  • d) None of the mentioned
Q.10
When the initial conditions of a system are specified to be zero it implies that the system is
  • a) At rest without any energy stored in it
  • b) Working normally with reference input
  • c) Working normally with zero reference input
  • d) At rest but stores energy A
0 h : 0 m : 1 s