Control Systems

41. In force-voltage analogy, velocity is analogous to

1. current
2. charge
3. inductance
4. capacitance

View answer

42. In liquid level and electrical system analogy, voltage is considered analogous to

1. head
2. liquid flow
3. liquid flow rate
4. none of the above

View answer

43. In open loop system

1. the control action depends on the size of the system
2. the control action depends on system variables
3. the control action depends on the input signal
4. the control action is independent of the output

View answer

44. In order to increase the damping of a badly underdamped system which of following compensators may be used?

1. Phase-lead
2. Phase-lag
3. Both (a) and (b)
4. Either (a) and (b)

View answer

45. In pneumatic control systems the control valve used as final control element converts

1. pressure signal to electric signal
2. pressure signal to position change
3. electric signal to pressure signal
4. position change to pressure signal

View answer

46. In thermal-electrical analogy charge is considered analogous to

1. heat flow
2. reciprocal of heat flow
3. reciprocal of temperature
4. temperature

View answer

47. increases the steady state accuracy.

1. Integrator
2. Differentiator
3. Phase lead compensator
4. Phase lag compensator

View answer

48. is a closed loop system.

1. Auto-pilot for an aircraft
2. Direct current generator
3. Car starter
4. Electric switch

View answer

49. is a part of the human temperature control system.

1. Digestive system
2. Perspiration system
3. Ear
4. Leg movement

View answer

50. is an open loop control system.

1. Ward Leonard control
2. Field controlled D.C. motor
3. Stroboscope
4. Metadyne

View answer