GATE EE 2005 | Induction Machines Question 51 | 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

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

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

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

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GATE EE Subjects

Electric Circuits

Three Phase Circuits Transient Response Graph Theory Two Port Networks Sinusoidal Steady State Analysis Network Elements Network Theorems

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

Linear Algebra Differential Equations Calculus Probability and Statistics Numerical Methods Vector Calculus Transform Theory Complex Variable

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Verbal Ability Logical Reasoning Numerical Ability

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Per Unit System Power Generation Cost Power System Stability Symmetrical Components and Symmetrical and Unsymmetrical Faults Circuit Breaker Switch Gear and Protection Load Flow Studies High Voltage Dc Transmission Generating Power Station Parameters and Performance of Transmission Lines

Electrical and Electronics Measurement

Error Analysis and Measurement Basic of Indicating Instruments Potentiometer and Instrument Transformers Measurement of Resistance and A.C Bridges Measurement of Energy and Power Digital Voltmeters Questions 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

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

Sequential Circuits Microprocessor Boolean Algebra Analog to Digital and Digital to Analog Converter Combinational Circuits Minimization Logic Families and Memories Logic Gates