WorksheetsSignals & Systems -1
Total questions: 15
Worksheet time: 10mins
Subject code of Signals & System is
18EC42
18EC43
18EC44
18EC45
Which of the following is not an example of signal
Blood Pressure
temperatre
aircraft
speech
The signal which is defined only at origin i.e only at t=0 is
unit step signal
impulse signal
exponential signal
ramp signal
The time range of the signal [u(t+1)-u(t-5)] is
-1 to 5
-1 to 4
-5 to 1
-5 to -1
The time range of the signal [u(n+1)-u(n-5)] is
-1 to 5
-1 to 4
4 to -1
0 to 5
- All continuous time sine,cosine and exponential signals are always periodic
- All Discrete time sine,cosine and exponential signals are always periodic
Both statements are correct
Both statements are wrong
statement 1 is correct, statement 2 is wrong
statement 1 is wrong, statement 1 is correct
A discrete time sine,cosine or exponential signal is
always Periodic
Always aperiodic
periodic only if its angular frequency is rational multiple of 2*pi
nonperiodic only if its angular frequency is rational multiple of 2*pi
The signal defined by x(t)= x(-t) is
Periodic
aperiodic
even
odd
A signal defined by x(t+T) = x(t) is said to be
Even signal
Power signal
Periodic signal
aperoidic signal
A signal is said to be power signal if its power is
zero
one
finite
infinite
A signal is said to be energy energy if its energy is
zero
one
finite
infinite
Most periodic signals are
Even signals
Energy signals
Power signals
asymmetric signals
which of the following is an operation on dependent variable
a. Amplitude scaling
b. Addition
c. Differentiation
d. time scaling
a, b, c, d
a, b, c
a, b
a
which of the following is not an operation on independent variable
a. Time scaling
b. Integration
c. Time reversal
d. Time shifting
a, c, d
b
a, b, d
None of the above
Any signal multiplied by impulse signal will have value
only from 0 to infinity
only at zero
both
none
