EC 8352 SIGNALS AND SYSTEMS

In an analog signal , both the magnitude of the signal and the independent variable are continuous

• True

• False

The sinusoidal and complex exponential signals are always periodic

• True

• False

When the energy of a signal is finite then the power will be finite

• True

• False

When the power of a signal is finite then the energy will be zero

• True

• False

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

1. All continuous time sine,cosine and exponential signals are always periodic
2. 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

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