Chapter 1 to 3 Multiple choice

The unit........... is the same as newton metre.

• power

• force

• work

The SI unit of force is ........ .

• joule

• newton

• watt

The product of force and velocity is the ........ .

• work done

• energy

• power

The rate of doing work is ........... .

• power

• efficiency

• energy

In British engineering system, the power of motors and engines are also expressed in .......... .

• Js⁻¹

• ergs⁻¹

• ft-lbs⁻¹

1 hp is equal to ........... ergs⁻¹.

• 550

• 746

• 746 x 10⁷

There are........ W in 1 hp.

• 550

• 746

• 746 x 10⁷

The unit watt is the same as .......... .

• Js⁻¹

• ergs⁻¹

• ft- lbs⁻¹

The mechanical advantage of a machine depends on the........ present.

• fraction

• friction

• fruition

The .......... is the ratio of the load to the effort.

• efficiency

• VR

• MA