Related Questions

Phase lag of the frequency response of a second order system to a sinusoidal forcing function
A Is 30°
B Is 90° at the most
C Approaches 180° asymptotically
D Is 120°
According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is
A 0°
B 45°
C 90°
D 180°
Response of a system to a sinusoidal input is called __________ response.
A Impluse
B Unit step
C Frequency
D None of these
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system?
A 1
B >1
C None of these
A sinusoidal variation in the input passing through a linear first order system
A Becomes more oscillatory (frequency increases)
B Becomes less oscillatory (frequency decreases)
C Gets amplified (magnitude increases)
D Gets attenuated (magnitude decreases)
A phase lag lead network introduces in the output
A Lag at all frequencies
B Lag at high frequencies and lead at low frequencies
C Lag at low frequencies and lead at high frequencies
D None of the above mentioned
In a lag network, the output voltage lags the input voltage in phase.
A True
B False
The phase lag produced by transportation relays
A Is independent of frequency
B Is inversely proportional to frequency
C Increases linearly with frequency
D Decreases linearly with frequency
Polyphase is characterized by two or more sinusoidal voltages, each having a different phase angle.
A True
B False
The frequency response of a first order system, has a phase shift with lower and upper bounds given by
A $$ - \infty ,\,\frac{\pi }{2}$$
B $$ - \frac{\pi }{2},\,\frac{\pi }{2}$$
C $$ - \frac{\pi }{2},\,0$$
D $$0,\,\frac{\pi }{2}$$

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