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ELECTRICAL ENGINEERING TERMS A QUESTIONS AND VERIFIED ANSWERS|100% CORRECT|GRADE A+
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ELECTRICAL ENGINEERING TERMS A QUESTIONS AND VERIFIED ANSWERS|100% CORRECT|GRADE A+
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ELECTRICAL ENGINEERING TERMS AQUESTIONS AND VERIFIED
ANSWERS|100% CORRECT|GRADE A+
*absolute value - ANSWER Value of an expression without regard to sign or phase angle.
*absolute zero - ANSWER The temperature where thermal energy is at minimum. -273.15�C or 0 Kelvin.
*ac - ANSWER [see alternating current]
*accessory - ANSWER A device, other than current using equipment, associated with such equipment or
with the wiring of an installation.
*acceleration - ANSWER Rate of change of velocity. [Unit: m/s2]
*acceleration due to gravity g - ANSWER Acceleration of a body falling freely in a vacuum as a result of
the gravitational pull of the earth. g = 9.807 m/s2
*accumulator - ANSWER Storage battery or secondary cell for storing electricity.
*accuracy - ANSWER Specifies the nearness of the measured value from the true value.
*acid - ANSWER Containing an excess of hydrogen ions over hydroxyl ions.
*acoustics - ANSWER Study of sound.
*ac potentiometer - ANSWER An apparatus for the comparison of a.c. voltages. Balance requires both
the magnitude and the phase angle of the unknown voltage to be balanced with the known voltage. This
may be done either in cartesian form or in polar form.
, *acre - ANSWER Unit of area in the Imperial system. 1 acre = 4047 m2 = 0.4047 hectares
*active - ANSWER element An element capable of generating electrical energy.
*active - ANSWER filter Any filter using an op amp is called an active filter.
*actuator - ANSWER Mechanical part of a limit switch that uses mechanical force to actuate the switch
contacts.
*acute - ANSWER angle An angle of less than 90o.
*address - ANSWER The number that uniquely identifies the location of a word in memory.
*adiabatic - ANSWER process taking place without heat entering or leaving the system.
*admittance - ANSWER Reciprocal of impedance. Ratio of the electric current to the voltage. [Unit:
siemens or S]
*aerodynamics - ANSWER Study of air moving around solid objects, or air flowing around a stationary
structure.
*air - ANSWER conditioning The control of temperature, humidity and the purity of the air. In tropical
countries like Sri Lanka, air conditioning only cools the air and not heats it, but in cold countries both
modes are available.
*algebraic - ANSWER sum Total of a number of quantities of the same kind, with due regard to sign.
*algorithm - ANSWER A systematic mathematical procedure which enables a problem to be solved in a
definite number of steps.
*alkaline - ANSWER Containing an excess of hydroxyl ions over hydrogen ions.
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