Related Questions

For a sine wave with peak value Imax the r.m.s. value is
A 0.5 Imax
B 0.707
C 0.9
D 1.414 Imax
The period of a sine wave is ___________ seconds. Its frequency is
A 20 Hz
B 30 Hz
C 40 Hz
D 50 Hz
In a sine wave the slope is constant
A Between 0° and 90°
B Between 90° and 180°
C Between 180° and 270°
D No where
A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current
A Increases
B Remains constant
C Decreases
D Ceases
A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased
A VR > VC
B VC > VR
C VR = VC
D VR and VC = 0
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
A Is increased
B Is decreased
C Does not change
D Momentarily goes to zero
An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then
A VR = VL
B VL
C VL = VR
D VL > VR
The angular position of a phasor represents the angle of the sine wave with respect to a reference.
A True
B False
If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by
A 0.6 Hs and 1.67 Hs
B 0.6 Hs and 1.87 Hs
C 1.27 Hs and 1.87 Hs
D 1.27 Hs and 1.67 Hs
If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:
A Q = S + F
B Q = S - F
C Q = F - S
D Q = S × F

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