What is the period of a signal x(t)?

a) T

b) 2T

c) T/2

d) None of the mentioned

2. Which of the given signals are periodic?

a) x(t) = 4 cos(5t)

b) x(t) = u(t) - 1/2

c) x(t) = 4u(t) + 2sin(3t)

d) x[n] = 2sin(3n)

3. Check whether the signal is periodic or not?

x(t) = cos(4t) + 2sin(8t)

a) Periodic with period /2

b) Periodic with period 2

c) Periodic with period 2/

d) Not periodic

4. Find the periodicity of the following signal. x(t)=cos((2/7)t)sin((3/5)t)

a) 30

b) 7

c) 35

d) 5/3

5. Find the fundamental period of 1+sin^2 (3/5)n.

a) 10/3

b) 5

c) 3/5

d) None of the mentioned

6. Which signal is called as energy signal?

a) Finite energy and zero power

b) Finite energy and non-zero power

c) Infinite energy and zero power

d) Infinite energy and non-zero power

7. Which signal is said to be power signal?

a) Infinite power and zero energy

b) Infinite power and non-zero energy

c) Finite power and infinite energy

d) Finite power and zero energy

8. Determine the periodicity and also find whether it is a power or energy signal?

e(-at)u(t)

a) Periodic and energy signal

b) Non periodic and energy signal

c) Periodic and power signal

d) Periodic and energy signal

9. Continuous Impulse signal is a power or energy signal?

a) Power signal

b) Energy signal

c) Both power and energy

d) Neither power nor energy signal