Electrical Power Engineering Qualifications Quiz

What is the SI unit of weight?

• Newton

• Kilogram

• Gram

• Ounce

What effort is required to lift a 300N object 1m from a lever, if the lever's length is 4m?

• 100N

• 33.33N

• 200N

• 50N

Which statement defines static equilibrium?

• The net forces at any given point are not zero where the forces do not cancel each other out

• The net forces at any given point are zero where they cancel each other out

• The net forces are stronger at the base of a structure to aid stability

• The net forces are stronger at the top of the structure to aid flexibility

Which statement defines power?

• The amount of energy consumed in 1 hour

• The rate of consumption of energy

• When work is done by moving a force through a distance

• When work is done by moving mass through a distance

Which statement defines 'work' as in 'work done'?

• The amount of energy consumed in one hour

• The rate of consumption if energy

• Moving an object by applying a force

• An object being at rest

When a wrench is used to tighten a bolt, what is the rotational force applied called?

• Torque

• Power

• Energy

• Mass

When charging a smartphone, what is actually moving within the charger's cable?

• Voltage

• Atoms

• Protons

• Electrons

What would be the effect on an electric car's motor circuit if the voltage from the battery were increased?

• The current would decrease

• The current would remain constant

• The current would affect the resistance

• The current would increase

What does resistance in an electrical circuit do?

• Increase the pressure in the circuit

• Restrict the flow of current in the circuit

• Reduce the pressure in the circuit

• Aid the movement of the electrons in the circuit

When installing a new lighting system in a large warehouse, which two properties should the electrician consider to minimize the volt drop across the extensive cable runs?

• Area and tensile strength

• Current and length

• Area and type of insulation

• Resistivity and material density