Engineering

Control of Electric Drives MCQs: 235 Questions & Answers in Engineering

235 Control of Electric Drives MCQs in Engineering with answers & explanations. Practice objective questions for competitive exams, interviews & self-assessm… Use the answer toggle below to show or hide all solutions, tap an option to check one question, or open a question for its own page.

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Control of Electric Drives MCQs: 235 Questions & Answers in Engineering

The selection of an electric motor for any application depends on which of the following factors ?

For a particular application the type of electric-and control gear are determined by which of the following considerations ?

Which ofthefollowingmotors is preferred for traction work ?

Which of the following motors always starts on load ?

is preferred for automatic drives.

When the load is above a synchronous motor is found to be more economical.

The load cycle for a motor driving a power press will be

Light duty cranes are used in which of the following ?

While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance ?

Which of the following motors are pre-ferred for overhead travelling cranes ?

Ward-Leonard controlled D.C. drives are generally used for excavators.

is preferred for synthetic fibre mills.

Which of the following motors is used for elevators ?

Which part of a motor needs maximum attention for maintenance ?

need frequent starting and stopping of electric motors,

Which feature, while selecting a.motor for centrifugal pump, will be of least significance ?

motor is a constant speed motor.

The starting torque in case of centrifugal pumps is generally

Which of the following motors are best for the rolling mills ?

is not a part of ball bearing ?

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