1
GATE EE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
A 4 pole induction machine is working as an induction generator. The generator supply frequency is 60 Hz. The rotor current frequency is 5 Hz. The mechanical speed of the rotor in RPM is
A
1350
B
1650
C
1950
D
2250
2
GATE EE 2016 Set 2
MCQ (Single Correct Answer)
+1
-0.3
The direction of rotation of a single-phase capacitor run induction motor is reversed by
A
interchanging the terminals of the AC supply.
B
interchanging the terminals of the capacitor.
C
interchanging the terminals of the auxiliary winding.
D
interchanging the terminals of both the windings.
3
GATE EE 2016 Set 1
MCQ (Single Correct Answer)
+1
-0.3
In a constant V/f induction motor drive, the slip at the maximum torque
A
is directly proportional to the synchronous speed
B
remains constant with respect to the synchronous speed
C
has an inverse relation with the synchronous speed
D
has no relation with the synchronous speed
4
GATE EE 2015 Set 2
Numerical
+1
-0
The figure shows the per-phase equivalent circuit of a two-pole three-phase induction motor operating at 50 Hz. The 'air-gap' voltage, Vg across the magnetizing inductance, is 210Vrms, and the slip, s, is 0.05. The torque (in Nm) produced by the motor is ________. GATE EE 2015 Set 2 Electrical Machines - Induction Machines Question 57 English
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