In the following questions, circle the letter which seems most correct.

1. A transmitter-receiver pair is connected with a coaxial cable. The signal power measured at the receiver is 0.1 watt. Signal Levels change 1000 times per second. Noise energy is 0.05 u Joules for every 1 millisecond. If is desired, determine how many levels must be accommodated in the signal to encode the bits.

a) 200

b)

c) 20

2. What is the bit rate of the transmission in question 1?

a) 200 bps

b) 200,000 bps

3. The 787 AT&T Zenith System has 1920 pixels per line by 787 lines. It is not interlaced and shows 60 frames per second. Assume that the Kell factor is 0.7 and that no lines are lost in retrace, find the uncompressed signal bandwidth?

a) 31 Mhz

b) 62 Mhz

c) 500 Mhz