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If x-axis represents the time, then slope of q-t curve gives:
NET
NUST Entry Test
Physics
Alternating Current
When an alternating voltage is applied to a capacitor, the charge q deposited on the capacitor:
NET
NUST Entry Test
Physics
Alternating Current
When V and I are in phase, then power is expressed as:
NET
NUST Entry Test
Physics
Alternating Current
For resistance, V and I vectors are drawn:
NET
NUST Entry Test
Physics
Alternating Current
In a purely resistive A.C circuit, instantaneous values of voltage and current:
NET
NUST Entry Test
Physics
Alternating Current
Instantaneous value of an alternating voltage are sine functions which vary with:
NET
NUST Entry Test
Physics
Alternating Current
The maximum current $I_{o}$ flowing through a resistor R connected with an alternating voltage source $V_{o}$ is given by:
NET
NUST Entry Test
Physics
Alternating Current
The current and voltage in an A.C circuit can be controlled:
NET
NUST Entry Test
Physics
Alternating Current
The basic circuit elements in A.C circuits are:
NET
NUST Entry Test
Physics
Alternating Current
The basic circuit element in a D.C circuit is:
NET
NUST Entry Test
Physics
Alternating Current
Unless stated otherwise, when we speak of A.C meter reading, we usually mean:
NET
NUST Entry Test
Physics
Alternating Current
The angular frequency of the rotating vector is:
NET
NUST Entry Test
Physics
Alternating Current
The length of the rotating vector (on a certain scale) represents the:
NET
NUST Entry Test
Physics
Alternating Current
A sinusoidally alternating voltage or current can be graphically represented by a:
NET
NUST Entry Test
Physics
Alternating Current
If 250 V is the RMS value of alternating voltage, then its peak value $V_{o}$ will be:
NET
NUST Entry Test
Physics
Alternating Current
If we connect an A.C voltmeter to read A.C voltage, it would read its:
NET
NUST Entry Test
Physics
Alternating Current
The points where the waveform of an A.C cycle cross the time axis corresponds to phase:
NET
NUST Entry Test
Physics
Alternating Current
The phase at the negative peak of an A.C cycle is:
NET
NUST Entry Test
Physics
Alternating Current
The phase at the positive peak of an A.C cycle is:
NET
NUST Entry Test
Physics
Alternating Current
The magnitude of alternating voltage V:
NET
NUST Entry Test
Physics
Alternating Current
Power delivered during a cycle:
NET
NUST Entry Test
Physics
Alternating Current
If we connect an ordinary DC ammeter to measure alternating current, it would measure its:
NET
NUST Entry Test
Physics
Alternating Current
The RMS value of alternating voltage is:
NET
NUST Entry Test
Physics
Alternating Current
The instantaneous value of alternating current maybe:
NET
NUST Entry Test
Physics
Alternating Current
Peak value of alternating current is:
NET
NUST Entry Test
Physics
Alternating Current
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