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Power Systems

Power Systems
Find the value of a729, where "a" is the operator

 0
 α
 α²
 1

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Power Systems
The total number of strands(N) is concentrically stranded cable with total annular space filled with strands of uniform diameter is given by (if x is number of layers)

 N = 3x²-3x+1
 N = 3x²+3x+1
 N = 3x²-6x+1
 N = 3x²-2x+1

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Power Systems
In a nuclear reactor, chain reactor is controlled by introducing

  cadmium rods.
 iron rods.
 brass rods.
 graphite rods.

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Power Systems
Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 mâ„§?

 160 Ω
 200 Ω
 400 Ω
 320 Ω

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Power Systems
A cable has the following characteristics, L = 0.201 µH/m and C = 196.2 pF/m. The velocity of wave propagation through cable is

 0.0312 m/s
 32 m/s
 159.24 m/µs
 159.24 m/s

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Power Systems
For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to

 V2.
 V.
 1 / V.
  1 / V2.

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