Basics of signal processing Quiz 1

1)The signal is a _________

• Time variant

• It is a physical phenomenon

• Conveys information

• All of the above

2) The inputs of the system are called _____

• Excitation

• Response

• Both a and b

• None of the above

3)The impulse function is _______ when t≠0

• One

• Zero

• Infinity

• None of the above

4) When n≠k, δ(n-k) is _______

• One

• Zero

• Infinity

• None of the above

5) The sum of two or more even functions, a product of two or more even functions or product of even number and odd functions results ______ function

• Even

• Odd

• Even or Odd

• None of the above

6) A signal said to be periodic if it satisfies the condition _________

• x(t)=x(t)

• x(t)=x(2t)

• x(t)=x(-t)

• x(t)=x(t+T)

7) The signal is said to be odd when it satisfies the condition _____________

• x(t)=x(t)

• x(t)=x(2t)

• x(t)=x(-t)

• x(t)=-x(-t)

8) _______ methods are used to find whether the signal is periodic or not

• Ratio

• GCD

• Both Ratio & GCD

9) A system said to be _______ when it produces bounded output for a bounded input

• Stable

• Causal

• LInear

• Non Cousal

10) _______ are the properties of convolution

• Commutative, distributive

• Associative, shift

• Convolution with impulse

• All of the above