1
GATE EE 2014 Set 1
Numerical
+1
-0
An 8-pole, 3-phase, 50 Hz induction motor is operating at a speed of 700 rpm. The frequency of the rotor current of the motor in Hz is ________.
Your input ____
2
GATE EE 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
A single phase induction motor is provided with capacitor and centrifugal switch in series with auxiliary winding. The switch is expected to operate at a speed of 0.7 Ns, but due to malfunctioning the switch fails to operate. The torque-speed characteristic of the motor is represented by
A
GATE EE 2014 Set 3 Electrical Machines - Induction Machines Question 55 English Option 1
B
GATE EE 2014 Set 3 Electrical Machines - Induction Machines Question 55 English Option 2
C
GATE EE 2014 Set 3 Electrical Machines - Induction Machines Question 55 English Option 3
D
GATE EE 2014 Set 3 Electrical Machines - Induction Machines Question 55 English Option 4
3
GATE EE 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
The torque-speed characteristics of motor ($$T_M$$) and load ($$T_L$$) for two cases are shown in the figures (a) and (b). The load torque is equal to motor torque at points P, Q, R and S GATE EE 2014 Set 3 Electrical Machines - Induction Machines Question 54 EnglishThe stable operating points are
A
P and R
B
P and S
C
Q and R
D
Q and S
4
GATE EE 2014 Set 2
MCQ (Single Correct Answer)
+1
-0.3
In a constant V/f control of induction motor, the ratio V/f is maintained constant from 0 to base frequency, where V is the voltage applied to the motor at fundamental frequency f. Which of the following statements relating to low frequency operation of the motor is TRUE?
A
At low frequency, the stator flux increases from its rated value.
B
At low frequency, the stator flux decreases from its rated value.
C
At low frequency, the motor saturates.
D
At low frequency, the stator flux remains unchanged at its rated value.
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Medical
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Graduate Aptitude Test in Engineering
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CBSE
Class 12