Which among the following systems undergo/s work transfer ?
Which among the following systems undergo/s work transfer?
a. Current flowing through the resistor
b. A shaft rotated by a motor
c. both a. and b.
d. none of the above
Correct Answer : c. both a. and b.
When electric current passes through the resistor, work transfer can takes place. This is because the current can drive a motor and the motor can drive a pulley and this can results in lifting a weight.
When a shaft is rotated by a system, work transfer can takes place into the system. This is because the shaft can rotate a pulley which can lift a weight. Thus both the systems undergo work transfer.