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1
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
Two regional system, each having several synchronous generators and loads are interconnected by an ac line and a HVDC link as shown in the figure. Which of the following statements is true in the steady state: GATE EE 2007 Power System Analysis - High Voltage Dc Transmission Question 3 English
A
Both regions need not have the same frequency
B
The total power flow between the regions (Pac + Pdc) can be changed by controlling the HVDC converters alone
C
The power sharing between the ac line and the HVDC link can be changed by controlling the HVDC converters alone.
D
The directions of power flow in the HVDC link (Pdc) cannot be reversed.
2
GATE EE 2006
MCQ (Single Correct Answer)
+1
-0.3
An HVDC link consists of rectifier, inverter transmission line and other equipments. Which one of the following is true for this link?
A
The transmission line produce/supplies reactive power
B
The rectifier consumes reactive power and the inverter supplies reactive power from/to the respective connected consumes
C
Rextifier supplies reactive power and the inverted consumes reactive power to/from the respective connected AC systems
D
Both the converters (rectifier and inverter) consume reactive power from the respective connected AC systems.
3
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
High Voltage DC (HVDC) transmission is mainly used for
A
bulk power transmission over very long distances
B
inter-connecting two systems with the same nominal frequency
C
eliminating reactive power requirement in the operation
D
minimizing harmonics at the converter stations
4
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
Choose two appropriate auxiliary components of a HVDC transmission system from the following
$$1.$$ D.C. line inductor
$$2.$$ A.C. line inductor
$$3.$$ Reactive power sources
$$4.$$ Distance relays on D.C. line
$$5.$$ Series capacitance of A.C. line
A
1 and 2
B
1 and 3
C
2 and 4
D
4 and 5
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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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