This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Reduction of Noise”.
1. Luminance is measured in ________
b) IRE units
d) NTSC units
Explanation: Luminance refers to brightness. It is a photometric measure of luminous intensity per unit area of light travelling in a given direction. It is measured in IRE units.
2. The maximum luminance level is called ________
a) max white
b) peak white
c) all white
d) width to power
Explanation: Luminance refers to brightness. It is a photometric measure of luminous intensity per unit area of light travelling in a given direction. It is measured in IRE units. The maximum luminance level is called peak white.
3. Which term is used for defining high and low points of a satellite’s orbit?
a) perigee and apogee
b) apogee and perigee
c) uplink and downlink
d) downlink and uplink
Explanation: Apogee and Perigee are respectively the terms used for defining high and low points of a satellite’s orbit.
4. What is the power order of power level for an earth station to transmit to a satellite?
a) 104 watts
b) 103 watts
c) 100 watts
d) 101 watts
Explanation: The standard power level of an earth station to transmit to a satellite is of the order of 103 Watts.
5. What is the full form of DBS?
a) direct broadcast satellite
b) decibels of signal
c) down beam signal
d) direct broadcast system
Explanation: DBS stands for direct broadcast satellite. In Direct Broadcast Satellite subscribers receives signal directly from geostationary satellite.
6. RCC stands for __________
a) Radio Common Carrier
b) Radio Communication Carrier
c) Radio Cellular Carrier
d) Radio Cell Carrier
Explanation: RCC stands for Radio Common Carrier. It was introduced in 60’s. Like a radio it can also transmit voice communication through a push to talk system. But it used a public telephone network and has its own telephone number.
7. Current PCs are referred as __________
Explanation: Current PCs in today’s time are referred as second generation.
8. ISM stands for _________
a) IEEE Standard Message
b) Industrial, Scientific and Messaging
c) Industrial, Scientific and Medical
d) IEEE Secure Message
Explanation: ISM stands for Industrial, Scientific and Medical. In it some radio frequencies are only used for Industrial, Scientific and Medical purposes not for telecommunications purpose.
9. Push pull amplifier is a class B amplifier.
Explanation: Push pull amplifier uses a pair of active devices that alternately supply current to a connected load and also absorb current from a connected load. It is a class B amplifier.
10. Bluetooth uses ________
b) Frequency hopping
Explanation: Bluetooth is a wireless technology. It is used for exchanging data over short distances. It usually uses frequency hopping.
Sanfoundry Global Education & Learning Series – Analog Communications.
To practice all areas of Analog Communications, here is complete set of 1000+ Multiple Choice Questions and Answers.