Power Output of a Shunt DC Motor: Understanding the Key Parameter

What parameter is indicative of the motor's power output in the context of a shunt DC motor with the specified specifications?

a) 440 V

b) 560 A

c) 863 rpm

d) 300 hp

Answer:

The parameter that is indicative of the motor's power output is d) 300 hp.

When considering a shunt DC motor with the given specifications of 300 hp, 440 V, 560 A, and 863 rpm, the key parameter that reflects the motor's power output is 300 hp. This is due to the fact that horsepower (hp) is a unit specifically used to measure power directly.

In electrical engineering, power is the rate at which work is done or energy is transferred. The hp rating of a motor directly indicates how much power it can output. While the other parameters such as voltage (440 V), current (560 A), and speed (863 rpm) provide essential information about the motor's operating conditions, they do not directly signify the motor's power output.

Understanding the significance of each parameter in relation to a shunt DC motor's performance is crucial for accurately assessing its capabilities and ensuring optimal functionality.