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1
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
Group I lists different applications and Group II lists the motors for these applications. Match the application with the most suitable motor and choose the right combination among the choices given there after:

Group I
P. Food mixer
Q. Cassette tape recorder
R. Domestic water pump
S. Escalator

Group II
1. Permanent magnet dc motor
2. Single phase induction motor
3. Universal motor
4. Three phase induction motor
5. DC series motor
6. Stepper motor

A
$$\begin{array}{l}P\;\;\;Q\;\;\;R\;\;\;S\\3\;\;\;\;6\;\;\;\;4\;\;\;\;5\\\end{array}$$
B
$$\begin{array}{l}P\;\;\;Q\;\;\;R\;\;\;S\\1\;\;\;\;3\;\;\;\;2\;\;\;\;4\\\end{array}$$
C
$$\begin{array}{l}P\;\;\;Q\;\;\;R\;\;\;S\\3\;\;\;\;1\;\;\;\;2\;\;\;\;4\\\end{array}$$
D
$$\begin{array}{l}P\;\;\;Q\;\;\;R\;\;\;S\\3\;\;\;\;2\;\;\;\;1\;\;\;\;4\\\end{array}$$
2
GATE EE 2002
MCQ (Single Correct Answer)
+1
-0.3
If a 400 V, 50 Hz, star connected, 3 phase squirrel cage induction motor is operated from a 400 V, 75 Hz supply, the torque that the motor can now provide while drawing rated current from the supply?
A
reduces
B
increases
C
remains the same
D
increase or reduces depending upon the rotor resistance
3
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
Starting torque can be obtained in the case of a single phase induction motor with identical main and auxiliary windings by connecting
A
a capacitor across the mains
B
a capacitor in series with the machine
C
a capacitor in series with the auxiliary winding
D
the main and the auxiliary windings in series
4
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
The following starting method for an induction motor is inferior view of the poor starting torque per ampere of the line current drawn:
A
Direct line starting
B
Auto transformer method of starting
C
Series inductor method of starting
D
Star-Delta method of starting
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GATE EE Subjects
Electric Circuits
Network Elements Network Theorems Three Phase Circuits Transient Response Sinusoidal Steady State Analysis Graph Theory Two Port Networks
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
Electrical Machines
Induction Machines D.C Machines Synchronous Machines Transformers
Engineering Mathematics
Calculus Vector Calculus Linear Algebra Differential Equations Probability and Statistics Transform Theory Complex Variable Numerical Methods
General Aptitude
Verbal Ability Logical Reasoning Numerical Ability
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
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
Analog Electronics
Diode Circuits and Applications Frequency Response Bjt and Mosfet Biasing 555 Timer Feedback Amplifiers and Oscillator Circuits Operational Amplifier Small Signal Modeling
Control Systems
Time Response Analysis Block Diagram and Signal Flow Graph Polar Nyquist and Bode Plot State Variable Analysis Root Locus Techniques Basics of Control System Routh Hurwitz Stability Controller and Compensator
Power Electronics
Choppers and Commutation Techniques Single and Three Phase Rectifier Power Semiconductor Devices Ac Voltage Controllers Inverters
Digital Electronics
Boolean Algebra Logic Gates Combinational Circuits Minimization Logic Families and Memories Sequential Circuits Analog to Digital and Digital to Analog Converter Microprocessor
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