Applied Electrical / Electronics Self-Assessment

Referring to the basic building blocks of Electrical circuits, the power supply provides the –

The potential difference of the power supply creates –

A semiconductor diode is a component that: –

The resistance of a conductor is: –

The key properties of control in an electrical circuit are: –

The fuse in an electrical circuit protects: –

When current flows through a resistance of a low voltage system energy is transferred, we detect this as: –

A ‘Relay’ can be used as: –

Resistance values are normally quoted at: –

Two light bulbs are connected in series, one has a resistance of 140Ω the other 110Ω, if you measured these two using an ohm meter, the expected reading would be: –

Two light bulbs are connected in parallel, their resistance is 120Ω each. If you measured them when connected together, using an ohm meter, the expected reading would be: –

What formulae can be used to calculate the voltage in a closed circuit: –

If a ‘fuse’ ruptures (blows) this is the result of: –

The power drawn from a power supply by a circuit can be calculated using the formula: –

A ‘capacitor’ can be used to: –

A device uses 24 Volts and takes a current of 3 Amps. What power is being used by the device

A basic transmission system requires these basic elements: –

Examples of electrical loads are: –

A ‘closed loop’ speed control system for a motor has to have: –

The current taken by an electric motor when starting is known as the: –

A star connected set of motor windings is usually used: –

Before work starts on an electrical system you should carry out the following: –

Before using a Digital Multi-Meter (DMM) you notice one of the cables to the probes has a bare wire showing, do you –

An inductive proximity sensor –

Piezo electric crystals are used in ultrasonic sensors because when electricity is applied to the crystal, the crystal: –

The neutral wire on a single phase system is –

The reliability of the ‘controller’ in a sequential fluid power system is –

A Zener diode is used to provide: –

Symbols on Electrical drawings should be drawn to a standard. What is this standard –

A 24V PNP capacitive proximity sensor will output: –

A transistor can be used as a: –

The abbreviation ‘rms’ stands for: –

The term ‘ripple’ relates to the –

When repairing a system that has an Uninterruptable Power Supply (UPS) you must ensure that: –

Pulse Width Modulation (PWM) is used in modern proportional control systems to: –

A resistor measurement of 120Ω when testing a CAN system on a mobile digger indicates –

Control signals are usually transmitted between controllers and proportional solenoids by means of: –

The numbering on a set of relay contacts are 21 and 22 this indicates they are: –

When using a Digital multi-meter to carry out voltage measurements on a system it is good practice to: –

Wires within data cables are: –

When cables enter or leave cabinets or enclosures they should have: –

When installing cables, the maximum bend radius of the cables is: –

A PT100 thermistor has a resistance of –

A solid state relay –

The advantage of electro-magnetism over a permanent magnet is that: –

One way to increase the magnetic effect of an electromagnet is to: –

An inverter is used to: –

When starting a three phase motor, the circuit breaker trips. To get the motor started you should: –

A normally closed set of relay contacts: –

What does the symbol represent –

What does the symbol represent –

This symbol represents

What does this symbol represent –

What does this symbol represent –

What does this symbol represent –

What does this symbol represent –

What does this symbol represent –

What does this symbol represent –

What does this symbol represent –

What does this symbol represent –