Power Systems Objective Questions & Answers – Set 11

High capacity generators and motors are of

Which of the following is/are the methods of improving transient stability?

Which statement is not correct for the transmission line parameter R, L, G and C

For a line characteristic impedance z_o terminated is load z_o/3, the reflection coefficient is

Which following statement are not true for line parameters R, L, G and C of transmission line

A synchronous generator is of 100 MVA have inertia constant of 20 MJ/MVA. Find the angular momentum in MJsec/electrical degrees

Which of the following statements is/are true? In case of parallel transmission lines

The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

For distortion less line which of following relation are true

The characteristic impedance of a transmission on line is

The positive (Z₁), negative (Z₂) and zero sequence (Z₀) impedances of a transmission line follows the relation

The VSWR of transmission line is

Equal area criteria is used for

If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

For distortion less line which of following relation are true

The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

Which following statement are not true for line parameters R, L, G and C of transmission line

The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X₁ = 0.12 pu, X₂ = 0.096 pu and X₀ = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

The characteristic impedance of a transmission on line is

If R = 84 ohm/Km, G = 10^-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

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

Which of the following represents the transmission line positive sequence reactance

Which of the following statement is/are true regarding infinite line?

The VSWR of transmission line is

Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length.

In a lossless medium the intrinsic impedance η 60π and μ_r = 1. The relative dielectric constant ε_r shall be

Which statement is not correct for the transmission line parameter R, L, G and C

If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is

Peterson coil is used in case of transmission line for

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