Electrical control systems Archives

51. The capacitance, in force-current analogy, is analogous to

momentum

velocity

displacement

mass

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

heat flow

reciprocal of heat flow

reciprocal of temperature

temperature E. none of the above

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53. Which of the following statements is not necessarily correct for open control system ?

Input command is the sole factor responsible for providing the control action

Presence of non-linearities causes malfunctioning

Less expensive

Generally free from problems of non-linearities

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54. An increase in gain, in most systems, leads to

smaller damping ratio

larger damping ratio

constant damping ratio

none of the above

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55. Which of the following can be measured by the use of a tachogenerator ?

Acceleration

Speed

Speed and acceleration

Displacement E. None of the above

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56. From which of the following transfer function can be obtained ?

Signal flow graph

Analogous table

Output-input ratio

Standard block system E. None of the above

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57.

two phase induction motor

Three phase induction motor

universal motor

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58. Velocity error constant of a system is measured when the input to the system is unit _______ function.

parabolic

ramp

impulse

step

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