A simple 2-pole dc machine consists of a rotating loop inside a magnetic field B=2T. The radius and length of the loop are 0.2 meter and 0.4 meter, respectively. The loop is connected in series to a battery VB = 120 V and a resistor R = 0.5 N via slip rings and carbon brushes (commutator). The current of i is flowing from the battery to the loop. The power loss in the resistor R is 320 W. Find the value of i, the induced voltage in the loop, induced torque and its direction (following or opposing the direction of rotation), the speed of the loop in rad/s, the shaft's power, and the battery power. What is this machine? Verify your answer according to its definition. In addition, find the efficiency of this machine.
A simple 2-pole dc machine consists of a rotating loop inside a magnetic field B=2T. The radius and length of the loop are 0.2 meter and 0.4 meter, respectively. The loop is connected in series to a battery VB = 120 V and a resistor R = 0.5 N via slip rings and carbon brushes (commutator). The current of i is flowing from the battery to the loop. The power loss in the resistor R is 320 W. Find the value of i, the induced voltage in the loop, induced torque and its direction (following or opposing the direction of rotation), the speed of the loop in rad/s, the shaft's power, and the battery power. What is this machine? Verify your answer according to its definition. In addition, find the efficiency of this machine.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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Transcribed Image Text:A simple 2-pole dc machine consists of a rotating loop inside a magnetic field B = 2 T. The
radius and length of the loop are 0.2 meter and 0.4 meter, respectively. The loop is connected in
series to a battery VB = 120 V and a resistor R = 0.5 N via slip rings and carbon brushes
(commutator). The current of i is flowing from the battery to the loop. The power loss in
the resistor R is 320 W. Find the value of i, the induced voltage in the loop, induced torque
and its direction (following or opposing the direction of rotation), the speed of the loop in
rad/s, the shaft's power, and the battery power. What is this machine? Verify your answer
according to its definition. In addition, find the efficiency of this machine.
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