Good solution The voltage length characteristic of a direct current (dc) arc is given by: V(30 + 60/) volts,where l is the length of the arc in cm. The power source characteristic is approximated by aThenstraight line with an open circuit voltage 80 V and a short circuit current = 1000amp.the optimum arc length is(a) 0.5 cm(b) 0.267 cm(c) 0.167 cm(d) 0.34 cm

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Answered: Irent (do

Engineering

Mechanical Engineering

Irent (do

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

Good solution

The voltage length characteristic of a direct current (dc) arc is given by: V
(30 + 60/) volts,
where l is the length of the arc in cm. The power source characteristic is approximated by a
Then
straight line with an open circuit voltage 80 V and a short circuit current = 1000
amp.
the optimum arc length is
(a) 0.5 cm
(b) 0.267 cm
(c) 0.167 cm
(d) 0.34 cm

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