Industrial Drives Objective Questions and Answers - ObjectiveBooks

Industrial Drives Objective Questions and Answers

Practice Test: Question Set - 07


1. The load cycle for a motor driving a power press will be
    (A) Variable load
    (B) Continuous
    (C) Continuous but periodical
    (D) Intermittent and variable load

2. Is preferred for synthetic fibre mills.
    (A) Synchronous motor
    (B) Reluctance motor
    (C) Series motor
    (D) Shunt motor

3. __________ motor is a constant speed motor.
    (A) Synchronous motor
    (B) Schrage motor
    (C) Induction motor
    (D) Universal motor

4. Which of the following is essentially needed while selecting a motor?
    (A) Pulley
    (B) Starter
    (C) Foundation pedal
    (D) Bearings

5. Heat control switches are used in
    (A) Transformers
    (B) Cooling ranges
    (C) Three phase induction motors
    (D) Single phase

6. In which of the following applications the load on motor changes in cyclic order?
    (A) Electric shovels
    (B) Cranes
    (C) Rolling mills
    (D) All of the above

7. ________ has the least value of starting torque to full load torque ratio.
    (A) D.C. shunt motor
    (B) D.C. series motor
    (C) Squirrel cage induction motor
    (D) Slip ring induction motor

8. In which of the following applications variable speed operation is preferred?
    (A) Exhaust fan
    (B) Ceiling fan
    (C) Refrigerator
    (D) Water pump

9. The capacity of a crane is expressed in terms of
    (A) Type of drive
    (B) Span
    (C) Tonnes
    (D) Any of the above

10. Which of the following motors has series characteristics?
    (A) Shaded pole motor
    (B) Repulsion motor
    (C) Capacitor start motor
    (D) None of the above

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