Question 1: When the armature current is increased the speed of DC Shunt Motor ...................
- Increases
- Decreases
- remains constant
BASIC
NEC 2023
DC Shunt Motor Practice Test Questions
Electrical Practice Tests: DC Shunt Motor
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This DC Shunt Motor Practice Test Questions has 9 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.
Tip: Work through Ohm's Law problems on paper — don't just read the answers, calculate them yourself.
- Topics covered: Voltage, current, resistance, Ohm's Law, series/parallel circuits, and electrical safety.
- Passing score: Aim for 90%+ on basic theory — these fundamentals underpin every advanced topic.
- Questions: 9 multiple-choice, one correct answer each
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TimeDC Shunt Motor Practice Test Questions — Question List
Question 2: Under Normal Operation DC Shunt Motor draws a current of <em><strong>I</strong></em>. For the same constant power output if the terminal is halved, its current will be..............
- 1/4 I
- 1/2 I
- 2 I
Question 3: The speed of the DC Shunt motor can be increased by:
- Increasing the resistance in the armature current
- increasing the resistance in the field circuit
- decreasing the resistance in the field winding
Question 4: In a DC motor the direction of rotor rotation depends on .....................
- Rotor power
- Rotor voltage
- Rotor frequency
- Rotor current
Question 5: The back EMF produced in a DC Motor ...........
- opposes the applied voltage
- opposes the armature current
- aids the applied voltage
- aids the armature current
Question 6: The developed mechanical power in a DC motor is maximum when the back EMF is equal to ............ the applied voltage.
- double
- half
- one by third
Question 7: The amount back EMF of a shunt motor will increase when ....................
- load is increased
- supply voltage is increased
- field flux is strengthened
- field flux is weekend
Question 8: The speed of the shunt motor is practically constant.
- True
- False
Question 9: In shunt motor the field winding is connected in ................ with the armature winding.
- series
- parallel
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