A signal is an energy signal when the signal has
1.Infinite energy
2.Finite energy
3. zero energy
4.None of the above
Posted Date:-2022-03-17 11:58:11
Determine the Fourier transform of unit step x(t) = u(t)
1.1/j ω
2.1/2j ω
3.j ω
4.2j ω
Posted Date:-2022-03-17 12:46:32
The equation y(t) = a x(t)+b comes under which system
1.Linear for any value of b
2.Linear if b > 0
3.Linear if b < 0
4.Non-linear
Posted Date:-2022-03-17 12:33:08
Which of the following is the one of the property of unit impulse δ(t) is
1.δ(at) = a δ(t)
2.δ(at) = δ(t)
3.δ(at) = 1/a δ(t)
4.δ(at) = [δ(t)]a
Posted Date:-2022-03-17 12:36:06
Which of the following time system operates with a continuous time signal & produces a continuous time output signal
1.Continuous time system
2.Discrete time system
3.Time invariant system
4.Time variant system
Posted Date:-2022-03-17 11:47:32
_________ is defined as any physical quantity that varies with time, space or any other independent variable
1.Signal
2.system
3.signals & system
4.None of the above
Posted Date:-2022-03-17 11:44:09
A continuous-time periodic signal x(t), having a period T, is convolved with itself. Then the resulting signal is
1. Not Periodic
2.D. Periodic having a period
3.Periodic having a period T
4.Periodic having a period T/2
Posted Date:-2022-03-17 12:45:04
A discrete signal is said to be even or symmetric if x(-n) is equal to
1.X(n00
2.0
3. "“x(n)
4. "“x(-n)
Posted Date:-2022-03-17 11:45:15
A discrete signal is said to be odd or asymmetric if x(-n) is equal to
1.X(n)
2.0
3."“x(-n)
4.∞
Posted Date:-2022-03-17 12:09:24
A signal is a power signal when the signal has
1.Infinite average power
2.finite average power
3.Zero average power
4.None of the above
Posted Date:-2022-03-17 11:46:46
A system is defined as
1.Any combination of components or elements that has a useful function.
2.Any combination of elements that has a single input and a single output.
3.Any closed volume for which all the inputs and outputs are known
4. Any physical quantity that varies with time,space or any other independent variable
Posted Date:-2022-03-17 12:17:40
A system is said to be casual if the output of the system depends on the
1.Past & Present Inputs
2.Present Input
3.Future Input
4.Past & Future Inputs
Posted Date:-2022-03-17 12:12:46
A system is said to be dynamic if the output of the system depends on the A. Past InputB. Future InputC. Present InputD. Present & Future Inputs
1.Past Input
2.Future Input
3.Present Input
4.Present & Future Inputs
Posted Date:-2022-03-17 12:10:41
A system is said to be stable if the bounded input to the system produces
1.Bounded output
2.Non bounded output
3.Inbound output
4.Outbound output
Posted Date:-2022-03-17 12:11:42
For a band pass signal extends from 1 KHz to 2 KHz. Then the minimum sampling frequency that needed to retain all information of the sampled signal is
1.1 KHz.
2.2 KHz.
3. 3 KHz.
4.4 KHz.
Posted Date:-2022-03-17 12:40:24
Frequency and Time period are ______
1.Proportional to each other
2. Inverse of each other
3.Same
4.None of the above
Posted Date:-2022-03-17 12:14:12
Nyquist bit rate formula defines the theoretical maximum bit rate for which channel
1.Noisy
2.Noiseless
3.Bandpass
4.Low-pass
Posted Date:-2022-03-17 12:19:14
Nyquist bit rate formula defines the theoretical maximum bit rate for which channel
1.Noisy
2.Noiseless
3.Bandpass
4.Low-pass
Posted Date:-2022-03-17 12:23:38
The given system is characterized by the differential equation d2y(t)/dt2-dy(t)/dt-2y(t)= x(t). Then the system is:
1.Linear and stable
2. Linear and unstable
3.Nonlinear and unstable
4.Nonlinear and stable
Posted Date:-2022-03-17 12:38:02
The function which relates output of a system to the input(signal) of a system is
1.Periodic function
2. Non-periodic function
3.Transfer function
4.None of the above
Posted Date:-2022-03-17 11:48:35
The Parseval's theorem states that the energy in the time-domain representation of a signal is equal to the energy in the frequency domain representation normalized by
1. 2Ï€
2.Ï€/2
3. π/2
4. π/4
Posted Date:-2022-03-17 12:37:08
Which of the following can weaken a signal
1.Attenuation
2.Distortion
3.Noise
4.All of the above
Posted Date:-2022-03-17 12:16:11