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Introduction to Transmission Lines

Total questions: 20

Worksheet time: 8mins

Name
Class
Date
1.

Transmission lines transmits digital signals only between two points occurs over a pair of parallel conductors.

a)

True

b)

False

2.

Electrical power propagates along transmission lines in the form of TEM waves.

a)

True

b)

False

3.

Transmission line analysis is used when?

a)

The frequency of operation is low

b)

The length of the transmission line is long

c)

None of the above

4.

In general, a line is considered as a transmission line if its length exceeds how many wavelength?

a)

1/8

b)

1/16

c)

1/4

d)

1/2

5.

Reflection of signal on the line must be avoided.

a)

True

b)

False

c)

Sometimes

6.

Which is not an Application of Transmission Lines?

a)

Pulse generator

b)

tuned circuits

c)

Impedance matching

d)

Phase delay

7.

Exact value of speed of light?

a)

299 792 459 m/s

b)

189,000 miles per second

c)

299 792 458 m/s

d)

299 792 358 m/s

8.

One example of unbalanced line?

a)

twin-lead

b)

coaxial cable

c)

BALUNS

d)

SHIELDED CABLE PAIR

9.

Which is not a balanced line?

a)

OPEN-WIRE TRANSMISSION LINE

b)

TWIN LEAD TRANSMISSION LINE

c)

CONCENTRIC TRANSMISSION LINE

d)

SHIELDED CABLE PAIR

10.

It is characterized by high radiation losses and is susceptible to noise.

a)

open-wire line

b)

Twin lead

c)

Twisted pair

d)

Coaxial lines

11.

Commonly used insulators are Teflon and Polyethylene.

a)

open-wire line

b)

Twin lead

c)

Twisted pair

d)

Coaxial lines

12.

It is not suitbale for high frequencies because of high loss due to insulation

a)

open wire

b)

twin lead

c)

twisted pair

d)

coaxial line

13.

It provides performance to allow data at 100 Mbps and slightly more

a)

CAT 8

b)

CAT 7

c)

CAT 6

d)

CAT 5

14.

It protects the twisted pairs of wires inside the Ethernet cable, helps prevent crosstalk and noise interference.

a)

CAT8

b)

CAT7

c)

CAT6

d)

CAT5

15.

It can reach up to 100Gbps at a range of 15 meters making it one of the most capable categories of Ethernet cables.

a)

CAT8

b)

CAT7

c)

CAT6

d)

CAT5

16.

This standard promises a maximum frequency of 2,000MHz and speeds of up to 40Gbps at 30 meters.

a)

CAT8

b)

CAT7

c)

CAT6

d)

CAT5

17.

This has a maximum bandwidth of 250MHz.

a)

CAT8

b)

CAT7

c)

CAT6

d)

CAT5

18.

It consists of parallel conductors separated and surrounded by a solid dielectric.

a)

CAT

b)

Twin lead

c)

Shielded Pair Cable

d)

Coaxial Line

19.

Rigid air filled coaxial has ability to minimize the radiation losses.

a)

True

b)

False

20.

Rigid-air filled is less expensive, easier to construct and install.

a)

True

b)

False