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WorksheetsElectrical Circuits Pop Quiz 1
Total questions: 10
Worksheet time: 4mins
A sinusoidal current has an rms value of 14 mA. Calculate the peak-to-peak value.
20.0 mA
19.8 mA
39.6 mA
14.0 mA
A signal with a 400 µs period has a frequency of…..
250 Hz
2500 Hz
25000 Hz
400 Hz
A phasor represents..
The magnitude of a quantity
The width of a quantity
The phase angle
The magnitude and a quantity direction
In a parallel R-C circuit, the current always _________the applied voltage
Lags
Leads
Remains in phase with
None of the above
A resistor of 3 kΩ, capacitor 0.05 µF and 120 mH coil are connected in series across 5 kHz, 20 V ac source. Calculate the impedance.
636Ω
3769Ω
433Ω
4337Ω
The unit of frequency is
Volt
Herts/second
Cycle
Hertz
A sinusoidal voltage has an rms value of 7.07V. The peak value is
7.07 V
10 V
14.14 V
20 V
Amplitude is the maximum value of a voltage or current
True
False
How many degrees are there in 2π rad
90
180
270
360
AC can be produced using a device called an alternator
True
False
