Electrical Actuating Systems MCQ

Test your knowledge with important Electrical Actuating Systems MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Electrical Actuating Systems MCQs at Bissoy

• What is the speed of a 3-phase induction motor if has a synchronous speed of 300 rpm and has percentage slip of 0.2% ?
  ক

  200 rpm

  খ

  380 rpm

  গ

  280 rpm

  ঘ

  294 rpm
• What is the frequency of a 3-phase induction motor if has 12 poles and its synchronous speed is 620 rpm?
  ক

  60 Hz

  খ

  62 Hz

  গ

  80 Hz

  ঘ

  58 Hz
• What is the speed of a 3-phase induction motor if has a synchronous speed of 400 rpm and has percentage slip of 5% ?
  ক

  700 rpm

  খ

  380 rpm

  গ

  480 rpm

  ঘ

  500 rpm
• What is the synchronous speed of a 3-phase induction motor if has 9 poles and its frequency is 50 Hz?
  ক

  700 rpm

  খ

  600 rpm

  গ

  650 rpm

  ঘ

  666.667 rpm
• What is the synchronous speed of a 3-phase induction motor if has 8 poles and its frequency is 40 Hz?
  ক

  700 rpm

  খ

  600 rpm

  গ

  650 rpm

  ঘ

  500 rpm
• What does PAM stands for, in context to speed control method of induction motor?
  ক

  Pole amplitude maintenance

  খ

  Passive amplitude modulation

  গ

  Pole amplification modulation

  ঘ

  Pole amplitude modulation
• Which speed control method can only be applied to squirrel cage type induction motors?
  ক

  Multiple Stator winding method

  খ

  Rotor rheostat speed control method

  গ

  Pole amplitude modulation method

  ঘ

  Frequency control method
• What happens to the synchronous speed of the induction motor if the frequency of the supply increases?
  ক

  It remains same

  খ

  It increases

  গ

  It decreases

  ঘ

  It does not work
• What happens to the synchronous speed of the induction motor if the number of stator poles increases?
  ক

  It remains same

  খ

  It increases

  গ

  It decreases

  ঘ

  It does not work
• Rotor rheostat speed control method can be used for controlling the speed of squirrel cage motors.
  ক

  True

  খ

  False
• Speed of an induction motor is independent of the number of stator poles.
  ক

  True

  খ

  False
• Speed of an induction motor is dependent on the frequency of the input supply.
  ক

  True

  খ

  False
• What is the frequency of a 3-phase induction motor if has 10 poles and its synchronous speed is 720 rpm?
  ক

  60 Hz

  খ

  50 Hz

  গ

  80 Hz

  ঘ

  40 Hz
• What is the speed of a 3-phase induction motor if has a synchronous speed of 500 rpm and has percentage slip of 4% ?
  ক

  700 rpm

  খ

  600 rpm

  গ

  480 rpm

  ঘ

  500 rpm
• What is the synchronous speed of a 3-phase induction motor if has 12 poles and its frequency is 60 Hz?
  ক

  700 rpm

  খ

  600 rpm

  গ

  650 rpm

  ঘ

  500 rpm
• A soft iron multi-toothed rotor and wound stator is present in _______
  ক

  permanent magnet stepper motor

  খ

  variable reluctance stepper motor

  গ

  hybrid stepper motor

  ঘ

  DC motor
• Length of rotation is directly related to to ____
  ক

  torque

  খ

  number of input pulses

  গ

  frequency of input pulses

  ঘ

  solenoid
• The speed of the rotation of the stepper motor depends on ____
  ক

  torque

  খ

  number of input pulses

  গ

  frequency of input pulses

  ঘ

  solenoid
• What is the step angle of a hybrid stepper motor?
  ক

  0.9 degree to 3.6 degree

  খ

  0.9 degree to 7.0 degree

  গ

  0.1 degree to 1.0 degree

  ঘ

  1.0 degree to 0.9 degree
• What is the formula to calculate the step angle of a stepper motor?
  ক

  (360*ph)/nph

  খ

  (ph/nph)

  গ

  (nph/ph)

  ঘ

  (360*nph)/ph
• Which of the following is not the main selection criterion of a stepper motor?
  ক

  Resolution required

  খ

  Drive mechanism component required

  গ

  Torque required

  ঘ

  Speed
• Which among the following is a property of hybrid stepper motor?
  ক

  Contains a soft iron multi-toothed rotor

  খ

  Low cost and low-resolution motor

  গ

  The better performance provided with respect to step resolution

  ঘ

  Provides an increased magnetic flux
• Which type of stepper motors have low cost and low-resolution motor?
  ক

  Permanent magnet stepper motor

  খ

  Variable reluctance stepper motor

  গ

  Hybrid stepper motor

  ঘ

  DC motor
• A soft iron multi-toothed rotor and wound stator is present in ___
  ক

  Permanent magnet stepper motor

  খ

  Variable reluctance stepper motor

  গ

  Hybrid stepper motor

  ঘ

  DC motor
• A stepper motor is a bad choice whenever control movement is required.
  ক

  True

  খ

  False
• Which among the following is not the type of a stepper motor?
  ক

  Variable reluctance

  খ

  Permanent magnet

  গ

  Hybrid

  ঘ

  Variable magnet
• Length of rotation is directly related to ____
  ক

  Torque

  খ

  Number of input pulses

  গ

  Frequency of input pulses

  ঘ

  Solenoid
• Stepper motors are extremely reliable.
  ক

  True

  খ

  False
• The speed of the rotation of the stepper motor depends on ________
  ক

  torque

  খ

  number of input pulses

  গ

  frequency of input pulses

  ঘ

  solenoid
• Which type of device is a stepper motor?
  ক

  Electromechanical

  খ

  Electrochemical

  গ

  Embedded system

  ঘ

  Electromagnetic