Power Systems Objective Questions & Answers
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The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by
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The positive (Z1), negative (Z2) and zero sequence (Z0) impedances of a transmission line follows the relation
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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
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Which of the following statement is/are true regarding infinite line?
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Which statement is not correct for the transmission line parameter R, L, G and C
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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
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Equal area criteria is used for
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For a line characteristic impedance zo terminated is load zo/3, the reflection coefficient is
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The VSWR of transmission line is
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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.
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For a lossy transmission line, the characteristic impedance does not depend on
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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
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Peterson coil is used in case of transmission line for
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Which of the following represents the transmission line positive sequence reactance
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For distortion less line which of following relation are true
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The characteristic impedance of a transmission on line is
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A synchronous generator is of 100 MVA have inertia constant of 20 MJ/MVA. Find the angular momentum in MJsec/electrical degrees
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Which of the following statements is/are true? In case of parallel transmission lines
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For a lossy transmission line, the characteristic impedance does not depend on
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In a lossless medium the intrinsic impedance η 60π and μr = 1. The relative dielectric constant εr shall be
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For distortion less line which of following relation are true
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Which following statement are not true for line parameters R, L, G and C of transmission line
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The characteristic impedance of a transmission on line is
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The VSWR of transmission line is
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High capacity generators and motors are of
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Which of the following is/are the methods of improving transient stability?
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Which statement is not correct for the transmission line parameter R, L, G and C
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The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by
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Wrong!
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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
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Which following statement are not true for line parameters R, L, G and C of transmission line
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