CNIM ELECTRICAL & INSTRUMENTATION
CONCEPTS TEST
Current (I) - Answer. The rate of charge flow per unit time
Unit: Ampere.
Current Flow - ANSWER: The movement of a charge or electron from + to -
Impedance: ANSWER Measurement of opposition to the flow of alternating
current (AC).
Inductance - Answer Opposition to change in current flow.
Resistance - ANSWER. The unit for measuring resistance to the flow of direct
current (DC) is Ohms.
Voltage - Answer Force generated by the differential between two points that
would push electric current between those two points.
Unit: Voltage (v)
Capacitance: ANSWER Ability to store an electric charge
Horizontal (time) resolution: ANSWER Determined by the sample rate (# of
data points per second).
Bin width (dwell time) = 1/sampling rate.
Vertical (amplitude) resolution: ANSWER Determined by the number of bits
(N).
Voltage levels in range = 2^N.
Frequency - Answer Frequency equals 1/period
Period of 60Hz = 1/60 = 16.67 milliseconds
CONCEPTS TEST
Current (I) - Answer. The rate of charge flow per unit time
Unit: Ampere.
Current Flow - ANSWER: The movement of a charge or electron from + to -
Impedance: ANSWER Measurement of opposition to the flow of alternating
current (AC).
Inductance - Answer Opposition to change in current flow.
Resistance - ANSWER. The unit for measuring resistance to the flow of direct
current (DC) is Ohms.
Voltage - Answer Force generated by the differential between two points that
would push electric current between those two points.
Unit: Voltage (v)
Capacitance: ANSWER Ability to store an electric charge
Horizontal (time) resolution: ANSWER Determined by the sample rate (# of
data points per second).
Bin width (dwell time) = 1/sampling rate.
Vertical (amplitude) resolution: ANSWER Determined by the number of bits
(N).
Voltage levels in range = 2^N.
Frequency - Answer Frequency equals 1/period
Period of 60Hz = 1/60 = 16.67 milliseconds
