R4RIN – MCQs, Mock Tests | Electrical engineering Audio Video Engineering MCQs set -5

Which type of transducers scientist discovered after the conventional picture tubes?

1. Solid state
2. Liquid state
3. Gaseous state
4. Plasma state

✅ Correct Answer: 1

Which screens are made up of liquid crystal sandwiched between two glass plates?

1. LED
2. Plasma
3. LCD
4. Monochrome

✅ Correct Answer: 3

In which monitor would the image look dimmer or even disappear when viewed from an angle?

1. Plasma
2. LCD
3. LED
4. Monochrome

✅ Correct Answer: 2

What is the range of the usual contrast ratio of LCD TV?

1. 600:1 to 1000:1
2. 500:1 to 700:1
3. 200:1 to 10000:1
4. 300:1 to 900:1

✅ Correct Answer: 1

Which monitor can rotate from landscape to portrait mode?

1. LCD
2. LED
3. Plasma
4. Monochrome

✅ Correct Answer: 1

What do LEDs consist of which glow when exposed to electric current?

1. Small semiconductors
2. Liquid semiconductors
3. Big and Small semiconductors
4. Big semiconductors

✅ Correct Answer: 1

Which type of TV does not work properly at high altitude?

1. Plasma
2. LED
3. Monochrome
4. LCD

✅ Correct Answer: 1

Which chemical coating is converted into red, green and blue colors when it comes in contact with UV rays in plasma screens?

1. Hydrochloric acid
2. Acetone
3. Phosphor
4. Nitrogen

✅ Correct Answer: 3

What is defined as the amount of light intensity as perceived by the eye regardless of the color?

1. Luminance
2. Hue
3. Saturation
4. Brightness

✅ Correct Answer: 1

What is termed as the predominant spectral color of the received light?

1. Brightness
2. Saturation
3. Luminance
4. Hue or tint

✅ Correct Answer: 4

Which of the following is the Grassman’s law equation?

1. Y = 0.30 × R + 0.59 × B + 0.11 × G
2. Y = 0.30 × G + 0.59 × R + 0.11 × B
3. Y = 0.30 × R + 0.59 × G + 0.11 × B
4. Y = 0.30 × B + 0.59 × G + 0.11 × R

✅ Correct Answer: 3

Which alloy are the electrodes generally used in picture tubes?

1. Nickel and nickel alloy
2. Nitrogen and nickel alloy
3. Carbon and iodine alloy
4. Carbon and nickel alloy

✅ Correct Answer: 1

Which is the costliest and most important part of television receiver?

1. Luminance
2. Display
3. Hue or tint
4. Picture tubes

✅ Correct Answer: 4

What causes the movement of electrons in horizontal and vertical directions when current is applied to the cathode of a picture tube?

1. Magnetic and electric field
2. Transmission field
3. Magnetic field
4. Electric field

✅ Correct Answer: 3

Which is the first basic equipment in a TV?

1. Camera
2. Bandwidth
3. Pixel
4. Resolution

✅ Correct Answer: 1

With which material is the signal plate coated in a Vidicon camera tube?

1. Photoconductive
2. Photosensitive
3. Photo acoustic
4. Photo transitive

✅ Correct Answer: 1

Of which material is the faceplate of a vidicon camera tube made?

1. N – type semiconductor
2. Ring connector
3. Glass or quartz
4. P – type semiconductor

✅ Correct Answer: 3

How many lines of resolution can be achieved under practical conditions in Vidicon camera tube?

1. 150
2. 750
3. 250
4. 350

✅ Correct Answer: 4

With which material is the Plumbicon camera tube made?

1. Lead mono-oxide
2. Potassium mono-oxide
3. Aluminum bi-oxide
4. Xenon mono-oxide

✅ Correct Answer: 1

Which type of diode is formed in the plumbicon tube?

1. Schottky
2. LED
3. PIN
4. Zener

✅ Correct Answer: 3

After entering into color camera tube the light is splits into how many paths?

1. 1
2. 2
3. 3
4. 4

✅ Correct Answer: 3

Which tube was the only tube to use primary RGB colors?

1. Trinicon single tube color camera
2. Color camera tube
3. Plumbicon camera tube
4. Vidicon camera tube

✅ Correct Answer: 1

Which of the following camera uses photo-diodes, MOS capacitors and shift registers?

1. Solid state video camera
2. Color camera
3. Trinicon single tube color camera
4. Vidicon camera

✅ Correct Answer: 1

What is the full form of CVS?

1. Composite video signal
2. Composite video system
3. Color video system
4. Composite value signal

✅ Correct Answer: 1

What is the period of one scanning line in composite video signal?

1. 52 μs
2. 25 μs
3. 36 μs
4. 64 μs

✅ Correct Answer: 4

How much cycles do the color burst (CB) in the composite video signal consists of?

1. 1 to 3
2. 4 to 6
3. 3 to 5
4. 8 to 10

✅ Correct Answer: 4

What is the range of peak white level in composite video signal?

1. 72 %
2. 50 to 70 %
3. 10 to 12.5 %
4. 75 %

✅ Correct Answer: 3

What is termed as the difference between black level and blanking level?

1. Pedestal
2. Pedestal height
3. Black level
4. DC level

✅ Correct Answer: 1

What will be the voltage if the picture is darker in composite video signal?

1. Lower
2. Higher
3. Constant
4. Varying

✅ Correct Answer: 2

What is defined as the width to height ratio of a picture frame?

1. Aspect ratio
2. Scanning
3. Flicker
4. Skimming

✅ Correct Answer: 1

What is the aspect ratio in the cinemas?

1. 1:2
2. 5:7
3. 4:3
4. 3:2

✅ Correct Answer: 3

What is termed as the conversion of light from a picture into video signal by scanning process?

1. Aspect ratio
2. Synchronization
3. Resolution
4. Pixels

✅ Correct Answer: 4

What is the effect called in which 70 percent of pixels are reproduced by active scanning lines?

1. Kell
2. Inductive
3. Mesomeric
4. Electromeric

✅ Correct Answer: 1

What is the resolution of Indian PAL system?

1. 140 lines
2. 340 lines
3. 410 lines
4. 40 lines

✅ Correct Answer: 3

What is the common name for Ultra high definition television?

1. 1K
2. 2K
3. 3K
4. 4K

✅ Correct Answer: 4

What depends on the frequency of frame in television fundamentals?

1. Aspect ratio
2. Pixels
3. Bandwidth
4. Resolution

✅ Correct Answer: 3

Which of the following format of video compression was used for efficient coding of video sequence?

1. MPEG – 1
2. MPEG – 2
3. MPEG – 3
4. MPEG – 4

✅ Correct Answer: 1

In which of the following format of video compression DVD movies are compressed?

1. MPEG – 3
2. MPEG – 1
3. MPEG – 4
4. MPEG – 2

✅ Correct Answer: 4

Which of the following format of video compression was used to handle HDTV?

1. MPEG – 1
2. MPEG – 4
3. MPEG – 2
4. MPEG – 3

✅ Correct Answer: 4

Which of the following format of video compression is used to handle lower bandwidth consuming application?

1. MPEG – 1
2. MPEG – 2
3. MPEG – 3
4. MPEG – 4

✅ Correct Answer: 4

Which of the following frame is self-contained and has no dependency outside the image?

1. I – frame
2. B – frame
3. D – frame
4. P – frame

✅ Correct Answer: 1

What is the full form of GOP?

1. Gigabyte of Pictures
2. Generation of Photos
3. Group of Pictures
4. Generation of Pictures

✅ Correct Answer: 2

Which video compression format does iPhones do not support?

1. MPEG – 1
2. MPEG – 3
3. MPEG – 2
4. MKV

✅ Correct Answer: 4

Which of the following is the first member of H.26x family of video coding standards?

1. H.264
2. H.262
3. H.263
4. H.261

✅ Correct Answer: 4

Which of the following format of video compression is not optimized for low bit rates?

1. H.263
2. H.261
3. H.262
4. H.264

✅ Correct Answer: 3

Which of the following format of video compression standard was first designed to be utilized in PSTN and circuit-switched network video conferencing and video telephony systems?

1. H.263
2. H.261
3. H.262
4. H.264

✅ Correct Answer: 1

Which of the following format of video compression is the latest generation standard for video encoding?

1. H.263
2. H.261
3. H.262
4. H.264

✅ Correct Answer: 4

Which multimedia standard associates the description with the content itself to allow fast and efficient searching?

1. MPEG-7
2. MPEG-4
3. MPEG-2
4. MPEG-3

✅ Correct Answer: 1

Which multimedia standard defines means of sharing digital rights, permissions and restrictions for digital content?

1. MPEG-7
2. MPEG-21
3. MPEG-1
4. MPEG-3

✅ Correct Answer: 2

Which color model is used for most computer model and video systems?

1. RGB
2. RYB
3. CMY
4. HSV

✅ Correct Answer: 1