Unit 262 – Multiple choice practice exam

Identify the mechanism shown in the figure below.

• An eccentric cam

• A gear train

• A toggle joint

• A pawl and ratchet

Which of the following is a unit of mass?

• Newton

• Newton per square metre

• Kilogram

• Metre

Electrical resistance is defined as

• Ratio of charge and time

• The product of voltage and current

• Ratio of voltage and current

• Product of charge and time

Inductance property regarding transformer causes

• Induced current when the voltage across it changes

• Induced emf when the current through it changes

• Induced current when the current through it changes

• Induced emf when the voltage across it changes

Which defines power the best?

• Power is proportional to the square of the time taken

• Power is done when a force is moved through a distance

• Power is the quality of the energy

• Power is the rate of consumption of energy

Which best defines work?

• Work is the rate of consumption of energy

• Work is the quality of energy

• Work is done when a force is moved through a distance

• Work is proportional to the square of the time taken

From Table 1, which of the following lists the density from low density to high density?

• Gold/Silver/Copper/Steel/Aluminium

• Aluminium/Steel/Copper/Silver

• Steel/Copper/Aluminium/Gold/Silver

• Copper/Aluminium/Steel/Silver/Gold

A force of 12.1 newtons moved through a distance of 20 m. The work done is

• 2.42 joules

• 242 joules

• 0.605 joules

• 2371.6 joules

Which is the correct relationship between voltage, current and resistance?

• R = VI

• V = IR

• I = R/V

Which two properties affects the voltage drop along a cable?

• Area and type of insulation

• Resistivity and density

• Resistivity and length

• Area and tensile strength