POWER MEASUREMENT IN RESISTIVE LOAD CIRCUITSExperiment No.2
DATA AND RESULT:Table: 2.1 Electrical Characteristics of
Resistive Load CircuitResistive ElementMeasured Resistance,
OhmsMeasured Voltage, VoltsMeasured Current, AmpsMeasured Power,
Watts%Difference in Power Dissipation
One (1) Incandescent
Two (2) Incandescent Bulbs In Parallel
Three (3) Incandescent Bulbs in Parallel
INTERPRETATION OF DATA AND RESULT:
OBSERVATION/FINDINGS:
CONCLUSION:
POWER MEASUREMENT IN RESISTIVE LOAD CIRCUITSExperiment No.2
QUESTION(S) / ANSWER(S):1. When do hot and cold resistance of
electric conductor is taken place?
2. Describe passive and active circuits.
3. A load of 5 kilowatts at 120 volts is to be supplied by
copper wires with a diameter of 0.518 cm. The distance between the
load and the DC generator is 150 meters, calculate:a. The
resistance of copper wire is its specific resistance is 1.724
micro-ohm-cm.b. The total power loss in the line.c. The line
efficiency.(Show your solution in a separate answer sheet)
4. In a test to determine the resistance of a single core cable,
an applied voltage of 2.5 volts was necessary to produce a current
of 2 amperes in at 15C. (a) Calculate the cable resistance at 55C
if the temperature coefficient of resistance of copper at 0C is 1 /
235 per C. (b) If the cable under working conditions carries a
current of 10 amperes, calculate the power dissipated in the cable.
(Show your solution in a separate answer sheet)
5. Heater A and heater B are in parallel across a 110-volt
supply. If the total power of the heaters consumed 2250 watts and
heater A takes as much as heater B, compute the resistance of the
heaters. (Show you solution in a separate answer sheet)
