Exercise :: Communication Systems - Section 1
- Communication Systems - Section 1
- Communication Systems - Section 2
- Communication Systems - Section 3
- Communication Systems - Section 4
- Communication Systems - Section 5
- Communication Systems - Section 6
- Communication Systems - Section 7
- Communication Systems - Section 8
- Communication Systems - Section 9
- Communication Systems - Section 10
- Communication Systems - Section 11
- Communication Systems - Section 12
- Communication Systems - Section 13
- Communication Systems - Section 14
- Communication Systems - Section 15
- Communication Systems - Section 16
- Communication Systems - Section 17
- Communication Systems - Section 18
- Communication Systems - Section 19
- Communication Systems - Section 20
- Communication Systems - Section 21
- Communication Systems - Section 22
- Communication Systems - Section 23
- Communication Systems - Section 24
- Communication Systems - Section 25
1. | A cordless telephone using separate frequencies for transmission in base and portable units is known as |
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Answer: Option A Explanation: Separate frequencies for transmission from base and portable units allows two way transmission and is called duplex arrangement. |
2. | For attenuation of high frequencies we should use |
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Answer: Option A Explanation: Since Xc for high frequencies is low, the high frequencies are shunted to ground and are not transmitted. |
3. | A modem is classified as low speed if data rate handled is |
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Answer: Option D Explanation: When data rate in bits per second is upto 600, modem is low speed. |
4. | VSB modulation is preferred in TV because |
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Answer: Option A Explanation: VSB (vestigial side band) transmission transmits one side band fully and the other side band partially thus, reducing the bandwidth requirement. |
5. | A woofer should be fed from the input through a |
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Answer: Option A Explanation: Woofer is a low frequency loud speaker covering the range 16 Hz to 500 Hz. |