This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Data Transmission”.
1. Piezo electric crystals are low impedance sources.
a) True
b) False
View Answer
Explanation: Piezo electric crystals are considered to be high impedance sources.
2. Modulation is used for __________________
a) Reducing loss in transmission
b) Amplification of signal
c) Conversion of signal
d) None of the mentioned
View Answer
Explanation: For transmission over long range message signal is mixed with a carrier signal for reducing loss during transmission.
3. In line code transmission, signal is represented by ______________
a) Impulses
b) Train of pulses
c) DC signal
d) Continuously varying signal
View Answer
Explanation: In Line code transmission, signal is represented by a train of pulses known as baseband transmission.
4. Which of the following process is explained as detection?
a) Modulation
b) Demodulation
c) Amplification
d) None of the mentioned
View Answer
Explanation: Demodulation or retrieving data from the signal is known as demodulation or detection.
5. Which of the following is represented as digital transmission?
a) Baseband bit stream transfer
b) Passband bit stream transfer
c) All of the mentioned
d) None of the mentioned
View Answer
Explanation: Both baseband and passband signals representing bit streams are considered to be a digital transmission.
6. PCM stands for ________________
a) Pulse create message
b) Pulse carry modulation
c) Pulse code modulation
d) None of the mentioned
View Answer
Explanation: Pulse code modulation is the process of conversion of analog signals to bit stream.
7. Codec equipment is used for ______________
a) Source coding
b) Source decoding
c) All of the mentioned
d) None of the mentioned
View Answer
Explanation: Codec equipment are used for source coding and decoding processes.
8. TCP stands for ___________
a) Tele Call Protocol
b) Transmission Control Protocol
c) Transmission Carry Protocol
d) Transmission Control Parity
View Answer
Explanation: TCP stands for transmission control protocol.
9. Tele-transmission is the process of transfer of ______________
a) Analog signals
b) Digital signals
c) Analog and digital signals
d) None of the mentioned
View Answer
Explanation: Tele-transmission is the process of both analog and digital transmission.
10. Which of the following is not a digital modulation method?
a) FSK
b) PSK
c) ASK
d) None of the mentioned
View Answer
Explanation: Frequency shift keying, phase shift keying and amplitude shift keying are different methods of digital modulation.
Sanfoundry Global Education & Learning Series – Instrumentation Transducers.
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