laboursonline – MCQs, Mock Tests | Analytical instruments Analytical Instrumentation MCQ Question Set 29

Which of the following are closely related to LED?

1. Conductors
2. Semiconductors
3. Superconductors
4. Insulators

✅ Correct Answer: 2

Which of the following represent forward bias voltage for LED?

1. Less than 0.7V
2. 1.5 V
3. 2.4 V
4. 5.6 V

✅ Correct Answer: 2

Which of the following is closely related to LED?

1. Passive device
2. Active device
3. May passive or active
4. None of the mentioned

✅ Correct Answer: 1

VDU’s are used for displaying _________

1. Alphabetic letters
2. Numerical characters
3. Graphical contents
4. All of the mentioned

✅ Correct Answer: 4

Line rast technique is used for ________

1. Generating character
2. Character alignment
3. Character spacing
4. Character brightening

✅ Correct Answer: 1

CRT can be used for representing ________

1. Amplitude of signal
2. Rise time of signal
3. Frequency of signal
4. All of the mentioned

✅ Correct Answer: 4

What will be the response time for LCD?

1. Less than 100ns
2. Less than 100ms
3. 1S
4. Unpredictable

✅ Correct Answer: 2

Which of the following is not true for LCD?

1. Low reliability
2. Short life span
3. Short response time
4. None of the mentioned

✅ Correct Answer: 4

Pen recorders are used for signals with frequency _______

1. Less than 0.1Hz
2. Less than 1Hz
3. Medium frequency
4. High as 1KHz

✅ Correct Answer: 1

Which of the following device is used in low-level dc voltages?

1. PMMC recorders
2. Self-balancing potentiometers
3. Pen recorders
4. Circular recorders

✅ Correct Answer: 2

Which of the following device can be used for concurrent measurement of two variables?

1. PMMC devices
2. Pen recorders
3. X-Y plotter
4. Circular recorder

✅ Correct Answer: 3

CRT act as converter of _______

1. Displacement to voltage
2. Voltage to displacement
3. Voltage to voltage converter
4. None of the mentioned

✅ Correct Answer: 2

Band width of CRT will be ________

1. Up to 10 KHz
2. Up to 100 KHz
3. Up to 1 MHz
4. up to 10 MHz

✅ Correct Answer: 4

Which of the following factors determine the accuracy of CRT?

1. Size of screen
2. Gain of amplifier
3. Both size of screen and gain of an amplifier
4. None of the mentioned

✅ Correct Answer: 3

Transient recorder is a storage oscilloscope.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Fibre optic oscilloscope is a ________

1. Single channel CRO
2. Dual channel CRO
3. Multi channel CRO
4. None of the mentioned

✅ Correct Answer: 1

Input impedance of oscilloscope is _______

1. Low as below 1Hz
2. 1KHz
3. As high as 1MHz
4. None of the mentioned

✅ Correct Answer: 3

CRO enable storage of data.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

In magnetic tape, data are recorded for ________

1. Storage
2. Visualising
3. Transfer
4. None of the mentioned

✅ Correct Answer: 1

How many variables can be stored in a magnetic tape with track number 16?

1. 2
2. 16
3. 256
4. 65536

✅ Correct Answer: 2

Magnetic tape can be used to store ______

1. Analog data
2. Digital data
3. Both analog and digital data
4. None of the mentioned

✅ Correct Answer: 3

Which of the following classes record head belong to?

1. Electromagnetic system
2. Electronic circuitry
3. Mechanical system
4. None of the mentioned

✅ Correct Answer: 1

Which of the following represents allowed bit rate of digital signal?

1. 10
2. 102
3. 104
4. 105

✅ Correct Answer: 4

Record head is similar to erase head.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Digital tape recorder is direct compatible with the computer.

1. True
2. False
3. all of the above
4. All of the Mentioned

✅ Correct Answer: 1

Which of the following represents the bias frequency of entertainment tape recorder.

1. 100 Hz
2. 100 KHz
3. 100 MHz
4. 100 GHz

✅ Correct Answer: 2

Highest frequency in FM recording is ________

1. 4 Hz
2. 40 Hz
3. 40 KHz
4. 40 MHz

✅ Correct Answer: 3

Effect due to sudden speed change in tape is ______

1. Flutter effect
2. Wow effect
3. Surge effect
4. Cracking

✅ Correct Answer: 1

Punched cards are _______

1. Display system
2. Sound system
3. Memory system
4. None of the mentioned

✅ Correct Answer: 3

Punched cards are used in ________

1. Low speed computers
2. High speed computers
3. Super computers
4. Mac devices

✅ Correct Answer: 1

Printers are ________

1. Asynchronous devices
2. Synchronous devices
3. Unpredictable
4. None of the mentioned

✅ Correct Answer: 2

Which of the following category tele printer belong to?

1. Serial printer
2. Parallel printer
3. Laser printer
4. None of the mentioned

✅ Correct Answer: 1

Which of the following category line printer belong to?

1. Serial printer
2. Parallel printer
3. Unpredictable
4. None of the mentioned

✅ Correct Answer: 2

Printing speed of line printer will be _______

1. Less than 600 lines/sec
2. Between 600-1200 lines/sec
3. Between 600-1200 lines/minute
4. Geater thean 1200 lines/minute

✅ Correct Answer: 3

Which of the following doesn’t belong to the class of line printer?

1. Bar type
2. Wheel type
3. Chain type
4. None of the mentioned

✅ Correct Answer: 4

Production of graphical image on VDU is called _______

1. Computer graphics
2. Virtual graphics
3. Virtual imaging
4. Image processing

✅ Correct Answer: 1

Which of the following is/are used in low speed computers?

1. Punched cards
2. Paper tape device
3. Both punched card and paper tape
4. None of the mentioned

✅ Correct Answer: 3

Storage unit is important between input and output devices.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Piezo electric crystals are low impedance sources.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Modulation is used for ________

1. Reducing loss in transmission
2. Amplification of signal
3. Conversion of signal
4. None of the mentioned

✅ Correct Answer: 1

In line code transmission, signal is represented by ______

1. Impulses
2. Train of pulses
3. DC signal
4. Continuously varying signal

✅ Correct Answer: 2

Which of the following process is explained as detection?

1. Modulation
2. Demodulation
3. Amplification
4. None of the mentioned

✅ Correct Answer: 2

Which of the following is represented as digital transmission?

1. Baseband bit stream transfer
2. Passband bit stream transfer
3. All of the mentioned
4. None of the mentioned

✅ Correct Answer: 3

PCM stands for ________

1. Pulse create message
2. Pulse carry modulation
3. Pulse code modulation
4. None of the mentioned

✅ Correct Answer: 3

Codec equipment is used for ______

1. Source coding
2. Source decoding
3. All of the mentioned
4. None of the mentioned

✅ Correct Answer: 3

TCP stands for _______

1. Tele Call Protocol
2. Transmission Control Protocol
3. Transmission Carry Protocol
4. Transmission Control Parity

✅ Correct Answer: 2

Tele-transmission is the process of transfer of _________

1. Analog signals
2. Digital signals
3. Analog and digital signals
4. None of the mentioned

✅ Correct Answer: 3

Which of the following is not a digital modulation method?

1. FSK
2. PSK
3. ASK
4. None of the mentioned

✅ Correct Answer: 4

Which of the following represents telemetry?

1. Fetching data from inaccessible point
2. Fetching data from accessible point
3. Communication over telephone
4. None of the mentioned

✅ Correct Answer: 1

Telemetry includes data transfer over ______

1. Wireless modes
2. Optical fibre link
3. Computer link
4. All of the mentioned

✅ Correct Answer: 4