Which is of the following data is required to draw the circle diagram for an induction motor?
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Electrical Engineering · all questionsPolyphase Induction Motors
Polyphase Induction Motors
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Slip rings are usually made of
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The starting torque of a three phase induction motor can be increased by
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Rotor rheostat control method of speed control is used for
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The stating torque of the slip ring induction motor can be increased by adding
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A double squirrel-cage induction motor has
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The term 'cogging' is associated with
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In medium sized induction motors, the slip is generally around
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Blocked rotor test on induction motors is used to find out
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A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor
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A 3-phase induction motor delta connected is carrying too heavy load and one of its fuses blows out. Then the motor
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Star-delta starting of motors is not possible in case of
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In an induction motor the relationship between stator slots and rotor slots is that
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A 3-phase slip ring motor has
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Low voltage at motor terminals is due to
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A 500 kW, 3-phase, 440 volts, 50 Hz, A.C. induction motor has a speed of 960 r.p.m. on full load. The machine has 6-poles. The slip of the machine will be
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It is advisable to avoid line starting of induction motor and use starter because
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Which of the following methods is easily applicable to control the speed of the squirrel-cage induction motor?
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In three-phase squirrel-cage induction motors
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In an induction motor if air-gap is increased
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