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1
GATE EE 1998
MCQ (Single Correct Answer)
+1
-0.3
A synchronous generator connected to an infinite bus is overexcited. Considering only the reactive power, from the point of view of the system, the machine acts as
A
a capacitor
B
an inductor
C
a resistor
D
None of the above
2
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
During hunting of synchronous motor
A
negative phase sequence currents are generated
B
harmonics are developed in the armature circuit
C
damper bar develops torque
D
field excitation increases
3
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
In Figure. The characteristic that corresponds to the variation of synchronous reactance of synchronous motor with field current is GATE EE 1996 Electrical Machines - Synchronous Machines Question 6 English
A
curve $${\rm I}$$
B
curve $${\rm I}$$$${\rm I}$$
C
curve $${\rm I}$$$${\rm I}$$$${\rm I}$$
D
curve $${\rm IV}$$
4
GATE EE 1995
MCQ (Single Correct Answer)
+1
-0.3
A synchronous motor on load draws a current at a leading power factor angle $$\phi$$. If the internal power factor angle – which is the phase angle between the excitation e.m.f. and the current in the time phasor diagram is $$\psi$$, then the air gap excitation m.m.f lags the armature m.m.f by
A
$$\psi$$
B
$$\frac{\mathrm\pi}2+\psi$$
C
$$\frac{\mathrm\pi}2-\psi$$
D
$$\psi+\phi$$
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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
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 Electronics
Choppers and Commutation Techniques Single and Three Phase Rectifier Power Semiconductor Devices Ac Voltage Controllers Inverters
Power System Analysis
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
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
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
Boolean Algebra Logic Gates Combinational Circuits Minimization Logic Families and Memories Sequential Circuits Analog to Digital and Digital to Analog Converter Microprocessor
Electrical Machines
Induction Machines D.C Machines Synchronous Machines Transformers
Electric Circuits
Network Elements Network Theorems Three Phase Circuits Transient Response Sinusoidal Steady State Analysis Graph Theory Two Port Networks
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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