Pre-Test: Expert Craftsman in Mechatronic

Electricity is related to...

• Electromagnetism

• Power

• Energy

• Circuit

Which is the push button?

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What is unit of apparent power?

• Mega Ohm

• Volt-ampere

• Volt-ampere-reactive

• Watt

What is resistance?

• Measure of the opposition to current flow in an electrical circuit

• The pressure from an electrical circuit's power source that pushes charged electron

• A flow of electrical charge carriers

• The amount of energy transferred or converted per unit tim

What is Ohm's Law?

• The current flowing into a node (or a junction) must be equal to the current flowing out of it

• The induced voltage in a circuit is proportional to the rate of change over time of the magnetic flux through that circuit

• The current through a conductor between two points is directly proportional to the voltage across the two points

• The power equals the voltage across a component times the current passing through that component

An electrical safety device that operates to provide overcurrent protection of an electrical circuit is refer to....

• Battery

• Lamps

• Fuse

• Switches

What is an electric motor?

• A device that converts motive power (​mechanical energy) into electrical power for use in an external circuit

• An electrical machine that converts electrical energy into mechanical energy

• A static electrical machine which transfers AC electrical power from one circuit to the other circuit at the constant frequency

• A device that stores electrical energy in an electric field. It is a passive electronic component with two terminals

What is thyristor?

• A power source consisting of one or more electrochemical cells with external connections for powering electrical device

• A two-terminal electronic component that conducts current primarily in one direction

• A solid-state semiconductor device with four layers of alternating P- and N-type materials

• A device that stores electrical energy in an electric field

An electric shock occurs when a person comes into contact with an electrical energy source. Electrical energy flows through a portion of the body causing a shock. Exposure to electrical energy may result in no injury at all or may result in devastating damage or death.

• TRUE

• FALSE

This diagram refer to...

• Miniature circuit breaker

• Soft starter

• Residual current circuit breaker

• Variable frequency drive