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Audio Video Engineering MCQs set -4

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1 Which of the following microphone have an integrated circuit (IC) that replaces the JFET in a conventional in an electret condenser microphone resulting in a fully digital output of the electret microphone?
✅ Correct Answer: 4
2 Which of the following is also called reverse transducer?
✅ Correct Answer: 1
3 What is expressed as the ratio of output sound power to the input audio (electrical power) in loudspeaker?
✅ Correct Answer: 1
4 What is expressed as the ratio of ‘signal output’ to the ‘output in the absence of signal’?
✅ Correct Answer: 2
5 What is the unit for directivity in loudspeaker?
✅ Correct Answer: 3
6 On which principle is the moving-coil loudspeaker based?
✅ Correct Answer: 1
7 What is the equation for the force in newton on the coil due to interaction between current through the coil and magnitude field?
✅ Correct Answer: 1
8 Which magnetic material is the magnet in the moving coil loudspeaker made up of?
✅ Correct Answer: 1
9 What is attached to the coil of moving coil loudspeaker and it causes compression and rarefaction cycles in air?
✅ Correct Answer: 1
10 What is the power handling capacity for cone type speaker?
✅ Correct Answer: 1
11 Which is the ideal medium for editing like cut, copy and paste in disk based recording?
✅ Correct Answer: 4
12 What type of coding is used for weakness of human ears in audio compression?
✅ Correct Answer: 3
13 In which type of applications can hard disk based drives are useful?
✅ Correct Answer: 1
14 Which audio storage device is faster in retrieving audio in disk based recording?
✅ Correct Answer: 2
15 What is known as each digit in binary?
✅ Correct Answer: 1
16 Which information is compared with the threshold level in a binary system?
✅ Correct Answer: 4
17 What is the main advantage of binary signal?
✅ Correct Answer: 1
18 A combination of how many bits in a binary number is commonly called a word?
✅ Correct Answer: 3
19 Which bit is used for signed numbers in binary signal?
✅ Correct Answer: 1
20 What is equal to 1024 bytes?
✅ Correct Answer: 4
21 In which audio systems, the sound is first converted into analog electrical signals using a microphone as a transducer?
✅ Correct Answer: 1
22 What numbers is digital information made of?
✅ Correct Answer: 1
23 What type of errors can be eliminated for stereo images in digital systems?
✅ Correct Answer: 3
24 Which of the following restrictions apply to analog broadcasting?
✅ Correct Answer: 4
25 Over how much distance can we transmit digital audio without loss of quality?
✅ Correct Answer: 2
26 Which is the important part of the system which are being used to time shift broadcast programs to skip commercial breaks?
✅ Correct Answer: 1
27 Which type of audio video files can be made portable by downloading?
✅ Correct Answer: 2
28 Which of the following cannot be detected and therefore it is difficult to separate the original signal from distorted signal in audio signal?
✅ Correct Answer: 3
29 What is the full form of PCM?
✅ Correct Answer: 1
30 In which manner each sample is represented in audio signal?
✅ Correct Answer: 4
31 What is expressed as the magnitude of sample represented by finite number which is proportional to some voltage in audio signal?
✅ Correct Answer: 1
32 At which time step is a sample taken in ADC?
✅ Correct Answer: 2
33 What is the other name for black and white TV?
✅ Correct Answer: 1
34 Which generator produces sets of pulses to operate the system at appropriate timings?
✅ Correct Answer: 3
35 Which carrier frequency is used in audio modulation in an FM transmitter for the purpose of audio signal transmission?
✅ Correct Answer: 2
36 Which antenna is preferred for aerial TV receiver in monochrome TV receiver?
✅ Correct Answer: 3
37 Which power supply is used in the monochrome TV receiver?
✅ Correct Answer: 3
38 Which three colors are used in color TV transmitter?
✅ Correct Answer: 1
39 What is the full form of VSB?
✅ Correct Answer: 2
40 How many times more pixels do an HDTV have than the resolution of analog signal in a DTV?
✅ Correct Answer: 1
41 Which digital signal processing technique takes preventive measures to protect the transport streams from errors caused by noise and interference in the transmission channel in DTV transmitter and receiver?
✅ Correct Answer: 1
42 What is the other name for video monitor?
✅ Correct Answer: 4
43 Which sync signals ensure that the scanning action of the electron beam down and across the screen is in synchronization in video monitors?
✅ Correct Answer: 4
44 What is termed as the process of exploring a video picture image in quick succession?
✅ Correct Answer: 4
45 Which signals are applied to the horizontal and vertical deflection circuits of the camera tube in scanning?
✅ Correct Answer: 3
46 What is the word used by TV engineers for one complete scanning from left to right and top to bottom and then again to the top?
✅ Correct Answer: 1
47 How many scanning lines per frame are there for Indian PAL system?
✅ Correct Answer: 4
48 What happens to the image if the space between pictures is longer than the period of persistence of vision?
✅ Correct Answer: 2
49 What is the field rate for PAL system?
✅ Correct Answer: 4
50 What is the term for even and odd fields that are scanned alternately?
✅ Correct Answer: 1
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