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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Engineering

Mechanical Engineering

Irent (do

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 11RQ: The electrical operating conditions are measured with and a(n) ______and a(n)_____.

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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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