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All India SSC JE 2017 Electrical Engineering - Quiz 41

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Question 1

The primary mmf is least affected by the secondary terminal conditions in a

Question 2

A DC motor has the following specifications: 10 hp, 37.5 A, 230 V; flux/pole = 0.01 Wb, number of poles = 4, number of conductors = 666, number of parallel paths = 2. Armature resistance = 0.267 Ω. The armature reaction is negligible and rotational losses are 600 W. The motor operates from a 230 V DC supply. If the motor runs at 1000 rpm, the output torque produced (in Nm) is ___________

Question 3

In a constant V/f induction motor drive, the slip at the maximum torque

Question 4

A 4pole, lap-connected, separately excited dc motor is drawing a steady current of 40 A while running at 600 rpm. A good approximation for the wave shape of the current in armature conductor of the motor is given by

Question 5

If an ideal transformer has an inductive load element at port 2 as shown in the figure below, the equivalent inductance at port 1 is

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ESE & GATE EE Electrical Machines

Mar 17ESE & GATE EE