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State the following, 1) Position of head light 2) Supply voltage for flasher light 3) Colours used for marker light 4) Frequencies for engine horn. 

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Ans: 1) Position of head light: Head light is located at center near roof level. 2) Supply voltage for flasher light: Nominal 110 V. dc, range 70 V to 140 V. 3) Colours used for marker light: Normally the marker lamps are white in front and the rear marker lights are red, when the loco is travelling alone, red marker indicates parking light 4) Frequencies for engine horn: For HT horn – 660 Hz For LT horn – 330 Hz

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