Electrical Control System MCQ Test - Set 02 - ObjectiveBooks

Electrical Control System MCQ Test - Set 02

Practice Test: Question Set - 02

1. An amplidyne can give which of the following characteristics?
    (A) Constant current
    (B) Constant voltage
    (C) Constant current as well as constant voltage
    (D) Constant current, constant voltage and constant power

2. A.C. servomotor is basically a
    (A) Universal motor
    (B) Single phase induction motor
    (C) Two phase induction motor
    (D) Three phase induction motor

3. In an open loop control system
    (A) Output is independent of control input
    (B) Output is dependent on control input
    (C) Only system parameters have effect on the control output
    (D) None of the above

4. A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver?
    (A) Clutch
    (B) Eyes
    (C) Needle of the speedometer
    (D) Steering wheel

5. A.C. servomotor resembles
    (A) Two phase induction motor
    (B) Three phase induction motor
    (C) Direct current series motor
    (D) Universal motor

6. Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero?
    (A) The system is relatively stable
    (B) The system is highly stable
    (C) The system is highly oscillatory
    (D) None of the above

7. In force-voltage analogy, velocity is analogous to
    (A) Current
    (B) Charge
    (C) Inductance
    (D) Capacitance

8. By which of the following the system response can be tested better?
    (A) Ramp input signal
    (B) Sinusoidal input signal
    (C) Unit impulse input signal
    (D) Exponentially decaying signal

9. The position and velocity errors of a type-2 system are
    (A) Constant, constant
    (B) Constant, infinity
    (C) Zero, constant
    (D) Zero, zero

10. The phase lag produced by transportation relays
    (A) Is independent of frequency
    (B) Is inversely proportional to frequency
    (C) Increases linearly with frequency
    (D) Decreases linearly with frequency

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