Bandwidth of Signals

Answer the following question :
Define 'bandwidth' and describe briefly its importance in communicating signals ?

Frequencies in the UHF range normally propagate by means of:

(a) Ground waves.

(b) Sky waves.

(c) Surface waves.

(d) Space waves.

Digital signals

(i) Do not provide a continuous set of values,

(ii) Represent values as discrete steps,

(iii) Can utilize binary system, and

(iv) Can utilize decimal as well as binary systems.

Which of the above statements are true?

(a) (i) and (ii) only

(b) (ii) and (iii) only

(c) (i), (ii) and (iii) but not (iv)

(d) All of (i), (ii), (iii) and (iv).

Whatis the difference between analogue signal and. digital signal?

Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?

Differentiate between Analog and Digital communication. 

What do you mean by bandwidth of a signal? Give its importance. 

Which of the following frequencies will be suitable for beyond-the-horizon communication using sky waves?

(a) 10 kHz

(b) 10 MHz

(c) 1 GHz

(d) 1000 GHz