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WorksheetsAC Principles
Total questions: 15
Worksheet time: 15mins
positive half-cycle - which portion of the cycle is it?
- the portion of the waveform above zero
- the portion of the waveform below zero
- the portion of the waveform above and below zero
The tangent ratio of a right angled triangle is?
opp/hyp
adj/hyp
opp/adj
The cosine ratio of a right angled triangle is?
opp/hyp
adj/hyp
opp/adj
peak value (VM or IM) - the maximum value of the waveform which how many times?
the maximum value of the waveform which occurs once, positive maximum and negative maximum
the maximum value of the waveform which occurs twice, positive maximum and negative maximum
the maximum value of the waveform which occurs three times, positive maximum and negative maximum
the maximum value of the waveform which occurs only in the negative maximum
negative half-cycle - Which portion of the waveform is it?
- the portion of the waveform above zero
- the portion of the waveform below zero
- the portion of the waveform above and below zero
The sine ratio of a right angled triangle is?
opp/hyp
adj/hyp
opp/adj
Which of the following equations is the transposition of the one displayed?
Z2+R2=X2
Z2+X2=R2
R2+X2=Z2
peak to peak value (VPP or IPP) - Is the magnitude of the wave from which point to which point?
peak to peak value (VPP or IPP) - the magnitude of the wave from the beginning of the cycle to the end of the cycle.
peak to peak value (VPP or IPP) - the magnitude of the wave from the maximum
positive value to the horizontal line.
peak to peak value (VPP or IPP) - the magnitude of the wave from the maximum
positive value to the maximum negative value.
peak to peak value (VPP or IPP) - the magnitude of the wave from the maximum
negative value to the horizontal line.
When moving a conductor in a circular path within a magnetic field producing a varying emf. What wave form is produced?
cosine wave
digital square wave
sine wave
mexican wave
period (T) - the time taken to complete what?
period (T) - the time taken to complete half a cycle, measured in seconds.
period (T) - the time taken to complete the frequency, measured in seconds.
period (T) - the time taken to complete one cycle, measured in seconds.
cycle - Is what on the sine wave?
How many times the cycle is completed.
cycle - one complete set of positive and negative values
something you ride.
frequency (f) - What does it refer to in the sine wave?
frequency (f) - the number of cycles completed in one second, measured in hertz (Hz)
frequency (f) - the maximum voltage.
frequency (f) - the time taken for one cycle.
The area under the positive half of the wave is equal to the area under the negative half of the wave. Therefore the average value of voltage or current over one full cycle is ?
Twice the amount.
half the amount.
75% of the amount.
zero.
The RMS value of an AC wave form represents what value, and is determined by what value times the peak value?
The same heating effect as an equivalent DC value. It's the peak value times 0.707
The same power effect as an equivalent DC value. It's the peak value times 0.707
The same heating effect as an equivalent DC current. It's the peak value times 0.707
The same heating effect as an equivalent DC value. It's the peak value times 0.632
To determine the instantaneous voltage or current what two values do we need? V = Vmax × Sinθ
Peak to peak value and the flux
The max current and the max voltage
Peak value and the phase angle in degrees
A note from your mum
