R4RIN – MCQs, Mock Tests | Electrical engineering Audio Video Engineering MCQs set -7

What is the full form of EDTV?

1. Extended Definition Television
2. Extra Definition Telephone
3. Extra Dimension Television
4. Extended Definition Telephone

✅ Correct Answer: 1

What is the scanning period when luminance and chrominance signals are compressed in EDTV?

1. 64 micro sec
2. 32 micro sec
3. 16 micro sec
4. 8 micro sec

✅ Correct Answer: 1

What is the full form of MAC?

1. Multiplexed Analog Container
2. Mixed Angle Components
3. Mixed Analog Compound
4. Multiplexed Analog Components

✅ Correct Answer: 4

What is the full form of OLED?

1. Organic Light Emitting Diodes
2. Operating Line Electronic Diodes
3. Organic Liquid Electric Diodes
4. Operating Liquid Emitting Diodes

✅ Correct Answer: 1

Which of the following televisions delivers the best picture quality?

1. LCD
2. Plasma
3. 3D
4. OLED

✅ Correct Answer: 4

Which company is the leader in OLED production?

1. Xiaomi
2. Nokia
3. Samsung Inc. (Incorporated)
4. Apple

✅ Correct Answer: 3

Which semiconductor properties paved the way for the first official LED discovery?

1. Gallium Arsenide (GaAs)
2. Germanium
3. Silicon
4. Silicon Carbide

✅ Correct Answer: 1

What is the approximate power savings in LED TVs?

1. 10 %
2. 40 %
3. 60 %
4. 33 %

✅ Correct Answer: 2

Which of the following is the disadvantage of Plasma TV?

1. Poor response time
2. Poor color depth
3. Poor contrast ratio
4. Susceptible to burn-in

✅ Correct Answer: 4

What is the full form of CCFL?

1. Color Cathode Figure Lamp
2. Crystal Cathode Fluorescent LED
3. Cold Cathode Fluorescent Lamp
4. Crystal Cathode Fluorescent LCD

✅ Correct Answer: 3

Which TVs are more bulky compared to LCDs?

1. Plasma
2. 3D
3. LED
4. OLED

✅ Correct Answer: 1

Which of the following TV receiver can be used for mono and stereo sound systems?

1. Plasma
2. HD
3. OLED
4. 3D

✅ Correct Answer: 1

Which of the following is an important feature in Plasma receivers?

1. Power saving
2. Viewing angles
3. Color Enhancer
4. Screen size

✅ Correct Answer: 3

Which mirror is the mirror with remarkable different reflection or transmission properties at two different wavelengths in LCD color receivers?

1. Convex
2. Concave
3. Dichroic
4. Plane

✅ Correct Answer: 3

Which technology uses three LCD panels to produce image?

1. 3 LCD color receiver
2. Plasma color receiver
3. Single LCD receiver
4. CRT color receiver

✅ Correct Answer: 1

Which channel is used to control the picture quality in plasma TV receiver?

1. Tuner
2. Chrominance
3. Luminance
4. Demodulation

✅ Correct Answer: 3

Which of the following is the chief micro-computer in plasma TV receivers?

1. AGC (Automatic Gain Control)
2. CCU (Central Control Unit)
3. IF section
4. UI (User Interface)

✅ Correct Answer: 2

Which of the following is the digital subsystem in plasma TV receivers?

1. Tuner
2. Demodulation
3. SYNC signals
4. RF input

✅ Correct Answer: 1

Which state of matter is used in plasma TV?

1. First
2. Second
3. Third
4. Fourth

✅ Correct Answer: 4

Using which colors different colors are produced when UV rays hit the phosphorous present in the sub pixels of plasma display television?

1. Yellow, blue and pink
2. Purple, white and red
3. Orange, black and green
4. Red, green and blue

✅ Correct Answer: 4

Which of the following scientist discovered liquid crystal?

1. Friedrich Reinitzer
2. Ada Lovelace
3. George Ohm
4. Joseph Henry

✅ Correct Answer: 1

In which phase the molecules have definite order of patterns in LCD technology?

1. Negative
2. Positive
3. Nematic
4. Smectic

✅ Correct Answer: 3

Which matrix uses the substrate which is made up of transparent conductive material called Indium Tin Oxide in LCD technology?

1. Active
2. Passive
3. Positive
4. Negative

✅ Correct Answer: 2

Which of the following matrix is used in LCD computer monitors and televisions?

1. Active
2. Passive
3. Negative
4. Positive

✅ Correct Answer: 1

How many levels of brightness per pixel is mostly displayed in LCD?

1. 164
2. 32
3. 256
4. 280

✅ Correct Answer: 3

Which of the following TV was made up of data display screens?

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

✅ Correct Answer: 2

Which of the following is the most important and expensive component of home theatre?

1. Projection system
2. Tuner receiver
3. Stereo receiver
4. Loud speaker

✅ Correct Answer: 1

Which of the following are used for recording high quality videos in home theatre system?

1. DVR
2. DVD
3. Blu-ray disc
4. Satellite box

✅ Correct Answer: 1

What is the maximum screen size available in home theatre?

1. 180”
2. 80”
3. 150”
4. 120”

✅ Correct Answer: 4

Which tuner should be preferred on a high definition satellite receiver unit in home theatre?

1. Integrated Off-Air
2. Integrated On-Air
3. Virtual d) Clip-on
4. Virtual d) Clip-on

✅ Correct Answer: 1

Which device is used to separate sound outputs picked up by separate microphones in a TV receiver or a DVD player in surround sound stereo receiver?

1. Decoder
2. Encoder
3. Multiplexer
4. Transformer

✅ Correct Answer: 1

Which is one of the main components of any home theatre system?

1. Satellite Off-Air tuners
2. Digital video recorder
3. Surround sound stereo system
4. DLP rear projection

✅ Correct Answer: 3

In which year Dolby laboratories introduced Dolby surround sound?

1. 1965
2. 1956
3. 1982
4. 1996

✅ Correct Answer: 3

How many ordinary and effects channel are there in a stereo receiver with Dolby digital decoder?

1. 5, 1
2. 3, 5
3. 2, 6
4. 4, 5

✅ Correct Answer: 1

Which of the following tuner enables receiving Off-Air channels along with On-Air channel?

1. Satellite Off-Air
2. Clip on
3. Electronic
4. Virtual

✅ Correct Answer: 1

In which encoder the signal from an antenna or analog cable must go through in Digital video recorder?

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

✅ Correct Answer: 4

Which of the following is the advantage of CRT projector?

1. Long life
2. Bulky, heavy
3. Focusing problem
4. Screen resolution

✅ Correct Answer: 1

Which of the following projector creates an image using a digital micro-mirror device (DMD) in a rear projection TV?

1. Front
2. LCD rear
3. Reflective
4. DLP

✅ Correct Answer: 4

What is the RPM at which the four segment color wheel rotates in a single chip DLP projector?

1. 2200
2. 4500
3. 3600
4. 5250

✅ Correct Answer: 3

Which of the following is the type of direct view display system?

1. CRT projector
2. Sony’s SXRD (Silicon X-tal Reflective Display)
3. Micro Display Corporation’s Liquid Fidelity
4. JVC’s D-ILA (Digital Direct Drive Image Light Amplifier)

✅ Correct Answer: 1

In which projection system the image is displayed on the back of the screen through reflection?

1. Direct (Front)
2. Rear
3. Upwards
4. Downwards

✅ Correct Answer: 2

Which projection TV system is used in movie theatres?

1. Downwards
2. Upwards
3. Rear
4. Front

✅ Correct Answer: 4

In which projectors 9 inches CRTs are used which emits bright light?

1. CRT Transmissive
2. LCD Transmissive
3. LED Transmissive
4. OLED Transmissive

✅ Correct Answer: 1

Which of the following projection system uses small contemplative chip?

1. Reflective
2. CRT
3. LCD Transmissive
4. LED Transmissive

✅ Correct Answer: 1

What is the full form of MEMS?

1. Multiple-electro Motion System
2. Magnetic-extended Multiple System
3. Micro-electro Mechanical System
4. Multiple-extended Magnetic System

✅ Correct Answer: 3

In which university of USA was DMD (Digital Micro-mirror Device) developed?

1. John Hopkins
2. Texas
3. Stanford
4. MIT

✅ Correct Answer: 2

What is the full form of GLV?

1. Grating Light Valve
2. Graphics Liquid Visual
3. Group Low Valve
4. Graphics Light Variable

✅ Correct Answer: 1

How long is the vertical line on which the GLV pixels are arranged in a projector?

1. 1080 pixels
2. 720 pixels
3. 360 pixels
4. 420 pixels

✅ Correct Answer: 1

Which projection system is capable of projecting clear images of any size without losing the original image resolution?

1. Digital Light Processing (DLP)
2. Reflective
3. Transmissive
4. Rear

✅ Correct Answer: 1

How many small mirrors does a DMD contain?

1. 5 million
2. 3 million
3. 2 million
4. 4 million

✅ Correct Answer: 3