GATE EE 2005 | Induction Machines Question 41 | Electrical Machines

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GATE EE 2005

MCQ (Single Correct Answer)

-0.3

For an induction motor, operating at a slip 's', the ratio of gross power output to air gap power is equal to:

$$\left(1-s\right)^2$$

$$\left(1-s\right)$$

$$\sqrt{\left(1-s\right)}$$

$$\left(1-\sqrt s\right)$$

GATE EE 2004

MCQ (Single Correct Answer)

-0.3

The type of single-phase induction motor having the highest power factor at full load is

shaded pole type

split-phase type

capacitor-start type

capacitor-run type

GATE EE 2004

MCQ (Single Correct Answer)

-0.3

The direction of rotation of a 3-phase induction motor is clockwise when it is supplied with 3-phase sinusoidal voltage having phase sequence A-B-C. For counter clockwise rotation of the motor, the phase sequence of the power supply should be

B-C-A

C-A-B

A-C-B

B-C-A or C-A-B

GATE EE 2004

MCQ (Single Correct Answer)

-0.3

For a linear electromagnetic circuit, the following statement is true.

Field energy is equal to the co-energy

Field energy is greater than the co-energy

Field energy is lesser than the co-energy

Co-energy is zero

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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

Linear Time Invariant Systems Continuous and Discrete Time Signals Continuous Time Signal Fourier Transform Continuous Time Periodic Signal Fourier Series Discrete Time Signal Z Transformation Miscellaneous Continuous Time Signal Laplace Transform Sampling Theorem

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 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 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

Power Electronics

Choppers and Commutation Techniques Ac Voltage Controllers Single and Three Phase Rectifier Power Semiconductor Devices 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