# The discrete-time equation y (n+1)+0.5n y (n) =0.5x (x+1) Is not attributable to a

1.  Memory less system

2.  Time-varying system

3.  Linear system

4.  Causal system.

4

Linear system

Explanation :
No Explanation available for this question

# A continuous-time system is governed by the equation 3y2(t)+2y2(t)+y(t) =x2+x(t)y(t) and x(t) respectively are output and the input. The system is

1.  Linear and dynamic

2.  Linear and non-dynamic

3.  Non-Linear and dynamic

4.  Non-Linear and non-dynamic

4

Non-Linear and non-dynamic

Explanation :
No Explanation available for this question

# Which one of the following systems is a causal system [y(t) is output and u(t) is a input step function].

1.  y (t)=sin[u(t+3)]

2.  y (t) =5u(t)+3u(t-1)

3.  y (t) = 5u(t)+3u(t+1)

4.  y (t)=sin[u(t-3)]+sin[u(t+3)].

4

y (t) =5u(t)+3u(t-1)

Explanation :
No Explanation available for this question

# The discrete time system described by y(n) =x(n2) is

1.  causal, linear and time-varying

2.  Causal, non-linear and time-varying

3.  Non-causal, linear and time-invariant

4.  Non-causal, non-linear and time-variant.

4

Non-causal, non-linear and time-variant.

Explanation :
No Explanation available for this question

# Given Then L[h(t)] in

1.

2.

3.

4.  None of these.

4 Explanation :
No Explanation available for this question

# The transfer function of a system is given by The impulse response of the system is

1.  (t2*e-2t) u(t)

2.  (t*e2t) u(t)

3.  (t2e-2t) u(t)

4.  (te-2t) u (t).

4

(te-2t) u (t).

Explanation :
No Explanation available for this question

# The relation between the input x(t) and the output y(t) of a causal system is described by the differential equation The impulse response of the system is

1.  -10u(-t+10)

2.  10u(t)

3.  10u(-t+10)

4.  -10u (t).

4

10u(t)

Explanation :
No Explanation available for this question

# The auto-correlation of the signal is

1.

2.

3.

4.

4 Explanation :
No Explanation available for this question

# In question y[n] is the convolution of two signals. Choose correct option for y[n] y[n] = (-1)n * 2n u[2n+2]

1.

2.

3.

4.

4 Explanation :
No Explanation available for this question

# In question y[n] is the convolution of two signals. Choose correct option for  y[n]

1.

2.

3.

4.

4 