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Power Systems

Power Systems
Attenuation occurs due to

 conductance
 resistance
 inductance
 both 1 and 3

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Power Systems
Which of the following is/are the disadvantages of phase modifiers?

 It consumes both active and reactive power
 Initial cost of synchronous phase modifier is higher
All of these
 It requires more maintenance because of running equipment

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Power Systems
A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° â„§. Find the no load receiving end voltage?

 500 kV
 600 kV
 400 kV
 320 kv

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Power Systems
For a lossy transmission line, the characteristic impedance does not depend on

 The permittivity of the dielectric separating the conductor.
 The operating frequency of the line.
 The load terminating the line.
 The conductivity of conductors.

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Power Systems
Which of the following plants is/are base load plants

 nuclear
 pump storage
 run off river
 both 1 and 2

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Power Systems
Equal area criterion gives the information regarding

 stability region
 swing curves
 relative stability
 absolute stability

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