Transmission Line Objective Type Questions and answers

36.  When a transmission line is energised, ............propagate on it

   A. Voltage wave only

   B. Current wave only

   C. Both voltage and current waves

   D. None of the above

37.  When a wave propagation on a transmission line, it suffers reflection several times at

   A. Load end

   B. Sending end

   C. Sending and other end

   D. Tapping point

38.  For a transmission line the standing wave ratio is the ratio of

   A. Peak voltage to rms voltage

   B. Maximum current to minimum current

   C. Maximum voltage to minimum voltage

   D. Maximum impedance to minimum impedance

39.  The installation strength of an EHV transmission line is mainly governed by

   A. Load power factor

   B. Switching over voltages

   C. Harmonics

   D. Corona

40.  The insulation coordination for UHV lines ( above 500 KV ) is done based on

   A. Lightning surges

   B. Lightning searches and switching surges

   C. Switching surges

   D. None of the above

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