6. ASK, PSK and FSK are examples of a. Digital to Analog c. Digtal to Digital 7. In Quadrature amplitude modulation (QAM), both the carrier signal are varried. a. Frequency and Amplitude b. Phase and frequency c. Amplitude and phase d. None of the above 8. representing four different symbols. a. ASK c. PSK b. Analog to Digital d. Analog to Analog a) 3 kbit/sec b) 64 kbit/sec is a multilevel modulation in which four phase shifts are used for b. FSK d. QPSK 9. A BPSK system modulates at the rate of: a. 1 bit / symbol c. 4 bit / symbol conversion b. 2 bit / symbol d. None of the above 10. A speech signal is occupying th band width of 300 Hz to 3 KHz is converted into PCM format for use in digital communication. If the sampling frequency is 8 kHz and each sample is quantized into 256 levels. The output bit rate will be c) 8 kbit/sec d) 256 kbit/sec of

6. ASK, PSK and FSK are examples of a. Digital to Analog c. Digtal to Digital 7. In Quadrature amplitude modulation (QAM), both the carrier signal are varried. a. Frequency and Amplitude b. Phase and frequency c. Amplitude and phase d. None of the above 8. representing four different symbols. a. ASK c. PSK b. Analog to Digital d. Analog to Analog a) 3 kbit/sec b) 64 kbit/sec is a multilevel modulation in which four phase shifts are used for b. FSK d. QPSK 9. A BPSK system modulates at the rate of: a. 1 bit / symbol c. 4 bit / symbol conversion b. 2 bit / symbol d. None of the above 10. A speech signal is occupying th band width of 300 Hz to 3 KHz is converted into PCM format for use in digital communication. If the sampling frequency is 8 kHz and each sample is quantized into 256 levels. The output bit rate will be c) 8 kbit/sec d) 256 kbit/sec of

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

ChapterS: Safety, Basic Electricity And Ohm's Law

Section: Chapter Questions

Problem 8RQ: What is an MSDS?

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