BEL Recruitment Paper 5

1. The gray code equivalent of binary 1100 is

a. 1011 b. 1101 c. 1010 d. 1100

2. A Multiplexer has

a. Multiple inputs and single output

b. Single input and Multiple outputs

c. Multiple inputs and Multiple outputs

d. Multiple inputs for Storage of Data

BEL Recruitment Paper 4

1. The noise figure of a receiver is a measure of:

1. Excess noise generated

2. Bandwidth of the receiver

3. Gain of the receiver

4. Operating frequency

BEL Recruitment Paper 3

1. VSWR on a transmission line is always

1. Equal to 1

2. Equal to 0

3. Less than 1

4. Greater than 1

BEL Recruitment Paper 2

1. The register is a

1. Simplified unit of a subtractor

2. Cascaded group of the flip-flop

3. Binary ripple counter

4. Data selector

BEL Recruitment Paper 1

1. Resistivity of silicon in ohms cm. is approx. equal to

a. 50 b. 1012 c. 230k d. 10-6

2. Rsistivity ofGermanium in ohms cm. is approx. equal to

a. 50   b. 10-12 c. 50k d. 10-6

3. The number of free electrons/cubic cm intrinsic Germanium at room temperature is approx. equal to

a. 1.5*1010 b. 2.5*1013 c. 1000 d. 5*106