d is distance in m
Q is value of variable resistor in ohm
P is variable resistance in ohm
Here Q/P = 1/3 is given,
d = Q/(P + Q)*Loop length
= 300 m
Resistance of heater, R = V²/P
R = 57.6 ohm
RMS value of voltage through controlled SCR = (Vm/2π)*(1 + cosα)
= 120 V
Power absorb by heater = Vrms²/R
= 250 W
When neutral disconnected, lamps are in series connection,
So, for series connection current is same for both Lamp,
So, Resistance of 100 W Lamp is more compared to 150 W Lamp.
Hence after neutral connection disconnect 100 W Lamp is more brighter than the 150 W Lamp.
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Analysis of a mineral oil sample for volatile compounds provides an indication of whether a fault or significant degradation has occurred.