Exam 3: Electrical Power and Energy

Work equals force multiplied by ____.

Efficiency is the ratio of the unused power output to the total power input.

With direct drive, the driving machine and the driven machine may be mounted on the same shaft, or a(n) ____ may be used.

Energy loss occurs whenever energy is destroyed or consumed.

When using a PIRE wheel, you should select a formula in the quadrant of ____.

Electrical energy is the product of power and time.

Power is a measurement of the rate of doing work.

The ____ of a motor is the amount of torque developed at the instant the motor is energized.

With which type of drive will the driven gear rotate in the opposite direction from the driving gear?

Which of these is an example of a driven machine?

A(n) ____connected in series with a motor will both limit and control the starting current.

How much power is dissipated by an electric oven if 30 A flows through a resistance of 10 ohms?

Electrical power, in watts, can be expressed as the product of current, in amperes and electrical pressure, in volts.

What is one possible downside of oversizing a motor?

Heat energy can be measured in ____.