Basic Electrical Circuits

- Circuit tester

A tool used to sense if AC electricity is present is called a __________. - Circuit tester - Cathode - Surge protector - Circuit breaker

amp

An ohm is a unit of resistance and the unit of measurement for current is the ______. - amp - watt - volt - ohm

operator

A pushbutton switch consists of a(n) ________ and one or more sets of contacts. - positioner - arm - selector - operator

- Momentary

A pushbutton switch with a return spring is called a(n) __________ switch. - Automatic - Self-opening - Momentary - Intermittent

momentary

A selector switch that returns to its original position when the knob is said to have ______ action. - momentary - constant - temporary - maintained

- Linear

A solenoid is an output device that moves in a(n) __________ motion when current is applied. - Rotary - Linear - Elliptical - Oscillatory

automatic

A switch activated by a machine or device is described as ________. - manual - programmed - automatic - double throw

- Energize and de-energize circuits

A switch is used to __________. - Control current - Increase voltage - Energize and de-energize circuits - Change from A/C to DC current

- Resistance

Ohms are a measurement of __________. - Voltage - Wattage - Resistance - Current

switch

A(n) _______ is a simple method for opening and closing an electrical circuit. - switch - battery - conductor - insulator

knife

A(n) _______ switch uses a lever operator that conducts current between one or more sets of contacts. - limit - parallel - knife - blade

schematic

A(n) ________ diagram uses symbols to represent the components in an electrical circuit. - schematic - pictorial - power flow - line

- Schematic

A(n) __________ diagram uses symbols to represent electrical devices and how they are connected. - Pictorial - Isometric - Scaled - Schematic

- Closed

A(n) __________ electrical circuit provides a path for current to flow between the positive and negative terminals of a power supply. - Open - Closed - Incomplete - Series

- None of the above

A(n) __________ switch is not a manually operated switch. - Pushbutton - Selector - Knife - None of the above

- Selector

A(n) __________ switch uses a rotary motion to open and close contacts. - Automatic - Pushbutton - Selector - Knife

cycles

Alternating current pushes electrons in one direction for a time and then pushes them in the opposite direction in ________. - waves - phases - cycles - pulses

- Every 6 months or so

Devices such as fire alarms should have the backup batteries replaced __________ to be safe. - Annually - Every 6 months or so - Bi-annually - Every decade

negative

Electrons are small particles that exist in all atoms and have a(n) _______ charge. - neutral - positive - proton - negative

series

In a(n) ________ circuit all inputs must be closed for electricity to flow. - parallel - integrated - series - compound

overloads

Power supplies frequently have fuses or circuit breakers to prevent ________. - power surges - power interruptions - voltage drop - overloads

conventional

The _______ theory of current flow states that current flows from the positive terminal of the power supply to the negative terminal. - traditional - transverse - electron flow - conventional

conductor

The four basic components of an electrical circuit are a power supply, an input device, output device, and a(n) _______. - insulator - battery - switch - conductor

- Amp

The unit of measurement for current is the __________. - Ohm - Amp - Watt - Volt

- All of the above

What is the function of a power supply? - Regulate voltage or current - Create smooth output voltage or current - Prevent an overload - All of the above

motor

Which output device produces rotary mechanical motion? - motor - lamp - resistor - solenoid

regulation

_____ is the function of a power supply that provides either a constant voltage or constant current. - regulation - compression - filtration - compensation

current

_______ is the rate of flow of electrons through a conductor. - current - resistance - capacity - voltage

alternating current

________ is more efficient to transport over long distances from the power plant to the point of use. - direct current - high frequency - alternating current - high current

- Direct

__________ current flows in only one direction. - Alternating - Absolute - Direct - Inverse

- Voltage

__________ is the amount of force exerted to move electrons. - Current - Voltage - Resistance - Power

- Manual

__________ switches are operated by humans to control power flow to outputs. - Manual - Automatic - Pneumatic - Limit