14. The resistance of the field coils of a dynamo is 173 Q at 16 deg C. After working for 6 hours on full-load, the resistance of the coils increases to 212 Q. Calculate the temperature of the coils. Assume temperature coefficient of resistance of copper is 0.00426/deg C at O * deg C. 62.5°C 52.5°C 82.5°C 72 50O

Introductory Circuit Analysis (13th Edition)
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@13&14 Please help me answer this problem. Choose the correct answer from the given choices. NOTE: Show your solutions or answers why you've got or undergone this answer. BOX YOUR FINAL ANSWER. Make sure your answer is in the given choices. State whether the answer is Option A, B, C, or D. Type only your step by step solutions and answers here, do not handwritten. Failure to follow the above reminders and direction will be marked as not helpful. Thank you.
14. The resistance of the field
coils of a dynamo is 173 Q at 16
deg C. After working for 6
hours on full-load, the
resistance of the coils
increases to 212 Q. Calculate
the temperature of the coils.
Assume temperature
coefficient of resistance of
copper is 0.00426/deg C at O
deg C.
62.5°C
52.5°C
82.5°C
72.5°C
Transcribed Image Text:14. The resistance of the field coils of a dynamo is 173 Q at 16 deg C. After working for 6 hours on full-load, the resistance of the coils increases to 212 Q. Calculate the temperature of the coils. Assume temperature coefficient of resistance of copper is 0.00426/deg C at O deg C. 62.5°C 52.5°C 82.5°C 72.5°C
13. A transmission line cable
consists of 19 strands of
identical copper conductors,
each 1.5 mm in diameter. The
length of the cable is 2km but
because of the twist of the
strands, the actual length of
each conductor is increased
by 5 percent. What is the
resistance of the cable ? Take
the resistivity of the copper to
be 1.78 x 10^-8 Q-m. *
2.079 Q
1.076 Q
1.546 Q
2.643 Q
Transcribed Image Text:13. A transmission line cable consists of 19 strands of identical copper conductors, each 1.5 mm in diameter. The length of the cable is 2km but because of the twist of the strands, the actual length of each conductor is increased by 5 percent. What is the resistance of the cable ? Take the resistivity of the copper to be 1.78 x 10^-8 Q-m. * 2.079 Q 1.076 Q 1.546 Q 2.643 Q
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