Nccer electrical Study guides, Class notes & Summaries

Which of the following is true with regard to switchboards Switchboards are used to subdivide large blocks of power When installing wiring within switchgear, use self adhesive cable ties every ___. 12" (300mm) The maximum voltage that a piece of equipment can withstand is known as its ____. Basic impulse insulation level (BIL) Bolted pressure switches are often used in place of ___. Circuit breakers A transformer's temperature rise rating refers to ___. The maxim...

How DC motors operate? Magnetic lines of force are continuous and always form closed loops; Magnetic lines of force do not cross. Armature: (Definition) The rotating windings of a DC motor. The ____ is a movable electromagnet located between the poles of another fixed permanent (field) magnet as shown. Armature A twisting force called ______ must be developed. _____ is produced by mounting a loop in a fixed magnetic field and as long as the fields of the magnet and armatu...

How DC motors operate? - correct answer -Magnetic lines of force are continuous and always form closed loops; Magnetic lines of force do not cross. Armature: (Definition) - correct answer -The rotating windings of a DC motor. The ____ is a movable electromagnet located between the poles of another fixed permanent (field) magnet as shown. - correct answer -Armature A twisting force called ______ must be developed. _____ is produced by mounting a loop in a fixed magnetic field and as long...

NCCER Electrical Test Questions and Answers (2024 / 2025) (Verified Answers)

Light energy that is NOT absorbed by an object can be _____. - correct answer -reflected from and/or transmitted through the object A light that is considered warm in tone is produced by lamps with color temperatures of _____. - correct answer -3,000°K The resistance of a tungsten filament is ______. - correct answer -much higher after the lamp is turned on The filament of a tungsten-halogen lamp is encased in a capsule containing iodine or _____. - correct answer -bromine gas Durin...

The minimum bending radius for 3" rigid conduit is _____. - correct answer -13" The minimum bending radius for 1/2" rigid conduit is _____. - correct answer -4" The maximum number of 90° bends allowed between pull points in a conduit system is ______. - correct answer -four A saddle bend is counted as ____. - correct answer -60°-180°, depending on the type of bends When referring to the two bends required to make an offset in a length of conduit, which of the following is alwa...

Which of the following is true regarding a series circuit? - correct answerThe current flow is the same through all resistors. Which of the following is true regarding a parallel circuit? - correct answerIt has more than one path for current to flow. Which of the following is true regarding a series-parallel circuit? - correct answerIf a circuit is reduced to an equivalent series circuit, the total resistance is found by adding the loads. Two branches of a circuit (R1 and R2) across a 1...

If the heater in a fixed IEC bimetallic overload relay fails, - correct answer -the entire overload relay must be replaced The nameplate of a motor indicates that the motor has an FLC of 15A and a service factor of 1.15, how much additional current can this motor safely handle for intermittent power demands? - correct answer -15A(1.15)= 17.25; 17.25A - 15A= 2.25A The minimum allowable coil control voltage needed to keep an electromechanical device energized is called the ___. - correct ans...

under strict safety guidelines, which of the following should be used to discharge capacitors before working on de-energized circuits. - safety shorting probe for safety, assume that any facility constructed before 1980 has? - asbestos with of the following is the threshold at which a power source is considered high voltage in the context of safety? - over 600V- 600Volts insulated gloves must be inspected by the user? - always and field checked the normal beating of a heart can be upset by...