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DC Machines (Electrical Engineering) - MCQs

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Q1.
which of the following DC motors, phone removal of load, will run at the maximum speed?
  • A. series
  • B. shunt
  • C. communicative compound
  • D. differential compound
    Discuss    
Q2.
which of the following DC motors will have least percentage increase of input current, for the same percentage increase in torque
  • A. cumulative compound
  • B. differential compound
  • C. shunt
  • D. series
    Discuss    
Q3.
the DC motor that draws almost same power at different loads is
  • A. communicative compound
  • B. differential compound
  • C. series
  • D. shunt
    Discuss    
Q4.
the DC motor most suitable for applications requiring high starting torque is
  • A. shunt
  • B. series
  • C. cumulative compound
  • D. differential compound
    Discuss    
Q5.
accumulative compound DC motor runs at 1500 RPM on full load if its series field is short circuited its speed
  • A. become zero
  • B. remains same
  • C. increases
  • D. decreases
    Discuss    
Q6.
when ADC communicative compound wound motor is loaded
  • A. torque increases and speed decreases
  • B. torque decreases and speed increases
  • C. both speed and torque increases
  • D. both speed and torque decreases
    Discuss    
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DC Basics and Networks Electromagnetic Field Theory Electrical Engineering Material Synchronous Machines Induction Machines Electrical Machine Design AC Basics and Networks Transmission and Distribution of Electrical Power Electrical Energy Utilisation and Electric Traction Electrical Installation and Wiring Basic Electronics Engineering Analog Electronics Digital Electronics Microprocessors Electronic and Electrical Measurements and Instruments
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