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1. _________ is defined as any physical quantity that varies with time, space or any other independent variable

• Signal

• system

• signals & system

• none of the above

2.Frequency and Time period are ______

• Proportional to each other

• Inverse of each other

• Same

• None of the above

3.In Signal the term n represents______

• continuous

• Discrete

• Digital

• none of the above

4.Which of the following can weaken a signal

• Attenuation

• Distortion

• Noise

• All of the above

5.The difference between the highest and the lowest frequencies of a signal is known as

• Frequency

• Period

• Bandwidth

• Amplitude

6.A system is defined as

• Any combination of components or elements that has a useful function.

• Any combination of elements that has a single input and a single output

• Any closed volume for which all the inputs and outputs are known.

• Any physical quantity that varies with time,space or any other independent variable

7.Sin(0) value

• 1

• 2

• 3

• none of the above

8.X(n)=(2,3,2,4,5)______representation

• Tabular

• Functional

• sequence

• Graphical

9.Impulse signal represented as

• u(t)

• r(t)

• g(t)

• none of the above

10.Types of scaling

• Amplitude

• Time

• Both

• none of the above