Q. The direction of rotation of a DC series motor shaft can be changed by _____________

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Q. Which of the following DC motor can be used at conveyors?

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Q. Which statement is correct about DC series motor?

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Q. In which of the following applications DC series motor is invariably tried?

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Q. The speed of a DC series motor is ___________

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Q. In a DC series motor, if the armature current is halved, the torque of the motor will be equal to

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Q. Applications demanding large applications at starting and small torque while running use DC series motor.

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Q. Which DC motor is generally preferred for cranes and hoists?

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Q. Which of the following motor has the poorest speed regulation?

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Q. Buses, trains, trolleys, hoists, cranes make use of DC series motor because __________

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Q. DC motor is to drive a load which is having certain minimum value for most of the time and some peak value for short duration. We will select the _______

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Q. Which DC motor has got maximum self-relieving property?

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Q. Which motor should not be started on no-load?

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Q. Actual speed obtained at any value of armature current comparing to speed obtained by assuming linear magnetic assumption in DC series motor is _______

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Q. Torque of a DC series motor is __________

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Q. Practically, at higher values of armature current torque does not follow its relationship with armature current.

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Q. What will happen to a torque, if a DC series motor is accidentally connected to single phase ac supply voltage?

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Q. Differentially compound DC motors are used in applications requiring _______

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Q. Which DC motor is more preferred for elevators?

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Q. Which DC motor is used in shears and punches?

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