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1
GATE EE 2012
MCQ (Single Correct Answer)
+1
-0.3
The slip of an induction motor normally does not depend on
A
rotor speed
B
synchronous speed
C
shaft torque
D
core-loss component
2
GATE EE 2010
MCQ (Single Correct Answer)
+1
-0.3
A balanced three-phase voltage is applied to a star-connected induction motor, the phase to neutral voltage being V. The stator resistance, rotor resistance referred to the stator, stator leakage reactance, rotor leakage reactance referred to the stator, and the magnetizing reactance are denoted by $$r_s,\;r_r,\;r_s,\;r_r\;and\;X_m$$, respectively. The magnitude of the starting current of the motor is given by
A
$$\frac V{\sqrt{\left(r_s+r_r\right)^2+\left(x_s+x_r\right)^2}}$$
B
$$\frac V{\sqrt{r_s^2+\left(r_s+X_m\right)^2}}$$
C
$$\frac V{\sqrt{\left(r_s+r_r\right)^2+\left(X_m+x_r\right)^2}}$$
D
$$\frac V{\sqrt{r_s^2+\left(X_m+x_r\right)^2}}$$
3
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
On the torque/speed curve of induction motor shown in Fig, four points of operation are market as W, X, Y and Z. Which one of them represents the operation at a slip greater than 1? GATE EE 2005 Electrical Machines - Induction Machines Question 67 English
A
W
B
X
C
Y
D
Z
4
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
For an induction motor, operating at a slip 's', the ratio of gross power output to air gap power is equal to:
A
$$\left(1-s\right)^2$$
B
$$\left(1-s\right)$$
C
$$\sqrt{\left(1-s\right)}$$
D
$$\left(1-\sqrt s\right)$$
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GATE EE Subjects
Electromagnetic Fields
Time Varying Fields Electrostatics Magnetostatics
Signals and Systems
Continuous and Discrete Time Signals Linear Time Invariant Systems Continuous Time Signal Fourier Transform Discrete Time Signal Z Transformation Continuous Time Signal Laplace Transform Sampling Theorem Continuous Time Periodic Signal Fourier Series Miscellaneous
Engineering Mathematics
Linear Algebra Differential Equations Calculus Probability and Statistics Numerical Methods Vector Calculus Transform Theory Complex Variable
General Aptitude
Verbal Ability Logical Reasoning Numerical Ability
Power Electronics
Choppers and Commutation Techniques Single and Three Phase Rectifier Power Semiconductor Devices Ac Voltage Controllers Inverters
Power System Analysis
Parameters and Performance of Transmission Lines Power Generation Cost Power System Stability Symmetrical Components and Symmetrical and Unsymmetrical Faults Circuit Breaker Switch Gear and Protection Per Unit System Load Flow Studies High Voltage Dc Transmission Generating Power Station
Analog Electronics
Diode Circuits and Applications Bjt and Mosfet Biasing Small Signal Modeling Feedback Amplifiers and Oscillator Circuits Operational Amplifier Frequency Response 555 Timer
Control Systems
Block Diagram and Signal Flow Graph Polar Nyquist and Bode Plot State Variable Analysis Basics of Control System Routh Hurwitz Stability Time Response Analysis Root Locus Techniques Controller and Compensator
Digital Electronics
Sequential Circuits Microprocessor Boolean Algebra Analog to Digital and Digital to Analog Converter Combinational Circuits Minimization Logic Families and Memories Logic Gates
Electrical Machines
Induction Machines D.C Machines Synchronous Machines Transformers
Electric Circuits
Three Phase Circuits Transient Response Graph Theory Two Port Networks Sinusoidal Steady State Analysis Network Elements Network Theorems
Electrical and Electronics Measurement
Basic of Indicating Instruments Error Analysis and Measurement Measurement of Resistance and A.C Bridges Measurement of Energy and Power Digital Voltmeters Questions Potentiometer and Instrument Transformers Cathode Ray Oscilloscope
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