Electrical Definition Exam Quiz

30 Questions | By MYLZ101 | Last updated: Mar 21, 2022 | Total Attempts: 363

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1.

- The SI unit of electric charge equal to the quantity of electricity transferred along the conductor by a current of one ampere in one second
- A.
  
  KILOWATT (kW)
- B.
  
  COULUMB (C)
- C.
  
  WATTAGE
- D.
  
  POTENTIAL DIFFERENCE
2.

The energy per unit charge available for conversion from a chemical, mechanical or other form of energy into electrical energy or vice versa in a conversion devise as a battery, generator or a motor
- A.
  
  ELECTROMOTIVE FORCE (emf)
- B.
  
  VOLTAGE
- C.
  
  AMPERE (A)
- D.
  
  OHM
3.

The basic SI unit of electric current, equivalent to a flow of one coulomb per second or to the steady current produced by one volt applied to one resistance of one ohm
- A.
  
  AMPERAGE
- B.
  
  CIRCUIT
- C.
  
  AMPERE (A)
- D.
  
  PARALLEL
4.

The SI unit equal to one joule per second or to the power represented by a current of one ampere flowing across a potential difference of one volt W= V x A
- A.
  
  WATT (W)
- B.
  
  ELECTROMOTIVE FORCE (emf)
- C.
  
  POTENTIAL DIFFERENCE
- D.
  
  RESISTANCE (R)
5.

The strength of an electric current measured or expressed in amperes: analogous to the rate of water flow
- A.
  
  AMPERAGE
- B.
  
  RESISTANCE (R)
- C.
  
  BATTERY
- D.
  
  ELECTRODE
6.

A pliable metallic strand or twisted or woven assembly of such strands often insulated with a dielectric material and used as a conductor of electricity
- A.
  
  INSULATOR
- B.
  
  WIRE
- C.
  
  NON- METALLIC SHEATED CABLE
- D.
  
  SHIELDED CABLE
7.

An electric cable enclosed within a metallic sheath in order to reduce the effects of external electric or magnetic fields
- A.
  
  COAXIAL CABLE
- B.
  
  FLEXIBLE METAL CONDUIT
- C.
  
  RIGID METAL CONDUIT
- D.
  
  SHIELDED CABLE
8.

The minimum applied voltage at which a given insulator breaks down and permits current to pass
- A.
  
  BREAKDOWN VOLTAGE
- B.
  
  DIELECTRIC
- C.
  
  JUNCTION BOX
- D.
  
  GROMMET
9.

An enclosure for housing and protecting electric wires or cables that are joined together in connecting or branching electric circuits
- A.
  
  PULL BOX
- B.
  
  THWN
- C.
  
  INSULATOR
- D.
  
  JUNCTION BOX
10.

An amount of power especially the power required to operate an electrical device or appliance, expressed in watts
- A.
  
  WATTAGE
- B.
  
  KILOWATT (kW)
- C.
  
  COULUMB (C)
- D.
  
  WATT (W)
11.

A unit of power equal to 1,000 watts
- A.
  
  KILOWATT-HOUR (kWh)
- B.
  
  POTENTIAL DIFFERENCE
- C.
  
  VOLTAGE
- D.
  
  KILOWATT (kW)
12.

Potential difference or electromotive force expressed in volts: analogous to pressure in water flow
- A.
  
  VOLT (V)
- B.
  
  CURRENT
- C.
  
  VOLTAGE
- D.
  
  AMPERE (A)
13.

The opposition of a conductor to the flow of current, causing some of the electric energy to be transformed into heat and usually measured in ohms
- A.
  
  AMPERE (A)
- B.
  
  AMPERAGE
- C.
  
  OHM
- D.
  
  RESISTANCE (R)
14.

The principle that the rate of production of heat by direct current is directly proportional to the resistance of the circuit and to the square of the current
- A.
  
  CIRCUIT
- B.
  
  CONDUCTIVITY
- C.
  
  RESISTIVITY
- D.
  
  JOULE’S LAW
15.

A measure of the ability of a substance to conduct electric current, equal to the reciprocal of the resistivity of the substance. Also called specific conductance.
- A.
  
  CONDUCTIVITY
- B.
  
  SERIES
- C.
  
  PARALLEL
- D.
  
  BATTERY
16.

RHW
- A.
  
  Moisture resistant thermoplastic
- B.
  
  Moisture and heat resistance rubber
- C.
  
  Asbestos and varnished cambric
- D.
  
  Silicone asbestos
17.

XHHW
- A.
  
  Silicone asbestos
- B.
  
  Heat resistant thermoplastic
- C.
  
  Moisture & heat resistant thermoplastic
- D.
  
  Moisture & heat resistant cross linked
18.

THW
- A.
  
  Moisture & heat resistant thermoplastic
- B.
  
  Moisture resistant thermoplastic
- C.
  
  Moisture and heat resistance rubber
- D.
  
  Asbestos and varnished cambric
19.

Used as supports and for additional protection for wires
- A.
  
  CUT OUT BOX
- B.
  
  INSULATOR
- C.
  
  OUTLET BOX
- D.
  
  BUSHING
20.

Where cable ends
- A.
  
  UTILITY BOX
- B.
  
  PULL BOX
- C.
  
  CUT OUT BOX
- D.
  
  OUTLET BOX
21.

Metal box with hinge & enclosure. House or fuse box
- A.
  
  CUT OUT BOX
- B.
  
  OUTLET BOX
- C.
  
  PULL BOX
- D.
  
  UTILITY BOX
22.

A rubber or plastic washer inserted in a hole in a metal part to prevent grounding of a wire passing through the hole
- A.
  
  KNOCKOUT
- B.
  
  GROMMET
- C.
  
  JUNCTION BOX
- D.
  
  BUSHING
23.

The maximum voltage that can be applied to a given material without causing it to breakdown, usually expressed in volts or kilovolts per unit of thickness
- A.
  
  DIELECTRIC STRENGTH
- B.
  
  DIELECTRIC
- C.
  
  BREAKDOWN VOLTAGE
- D.
  
  CABLE TRAY
24.

An open metal framework for supporting insulated electrical conductors
- A.
  
  BUS DUCT
- B.
  
  DUCT
- C.
  
  MULTI- OUTLET ASSEMBLY
- D.
  
  CABLE TRAY
25.

A surface mounted raceway designed to house the electrical wires for a circuit and a series of receptacles
- A.
  
  MULTI- OUTLET ASSEMBLY
- B.
  
  SURFACE RACEWAY
- C.
  
  RACEWAY
- D.
  
  FLEXIBLE METAL CONDUIT