Analytical instruments MCQ Quiz Hub

1. Which of the following are closely related to LED?
Conductors
Semiconductors
Superconductors
Insulators

2. Which of the following represent forward bias voltage for LED?
Less than 0.7V
1.5 V
2.4 V
5.6 V

3. Which of the following is closely related to LED?
Passive device
Active device
May passive or active
None of the mentioned

4. VDU’s are used for displaying _________
Alphabetic letters
Numerical characters
Graphical contents
All of the mentioned

5. Line rast technique is used for ________
Generating character
Character alignment
Character spacing
Character brightening

6. CRT can be used for representing ________
Amplitude of signal
Rise time of signal
Frequency of signal
All of the mentioned

7. What will be the response time for LCD?
Less than 100ns
Less than 100ms
1S
Unpredictable

8. Which of the following is not true for LCD?
Low reliability
Short life span
Short response time
None of the mentioned

9. Pen recorders are used for signals with frequency _______
Less than 0.1Hz
Less than 1Hz
Medium frequency
High as 1KHz

10. Which of the following device is used in low-level dc voltages?
PMMC recorders
Self-balancing potentiometers
Pen recorders
Circular recorders

11. Which of the following device can be used for concurrent measurement of two variables?
PMMC devices
Pen recorders
X-Y plotter
Circular recorder

12. CRT act as converter of _______
Displacement to voltage
Voltage to displacement
Voltage to voltage converter
None of the mentioned

13. Band width of CRT will be ________
Up to 10 KHz
Up to 100 KHz
Up to 1 MHz
up to 10 MHz

14. Which of the following factors determine the accuracy of CRT?
Size of screen
Gain of amplifier
Both size of screen and gain of an amplifier
None of the mentioned

15. Transient recorder is a storage oscilloscope.
True
False
all of the above
None of the mentioned

16. Fibre optic oscilloscope is a ________
Single channel CRO
Dual channel CRO
Multi channel CRO
None of the mentioned

17. Input impedance of oscilloscope is _______
Low as below 1Hz
1KHz
As high as 1MHz
None of the mentioned

18. CRO enable storage of data.
True
False
all of the above
None of the mentioned

19. In magnetic tape, data are recorded for ________
Storage
Visualising
Transfer
None of the mentioned

20. How many variables can be stored in a magnetic tape with track number 16?
2
16
256
65536

21. Magnetic tape can be used to store ______
Analog data
Digital data
Both analog and digital data
None of the mentioned

22. Which of the following classes record head belong to?
Electromagnetic system
Electronic circuitry
Mechanical system
None of the mentioned

23. Which of the following represents allowed bit rate of digital signal?
10
102
104
105

24. Record head is similar to erase head.
True
False
all of the above
None of the mentioned

25. Digital tape recorder is direct compatible with the computer.
True
False
all of the above
All of the Mentioned

26. Which of the following represents the bias frequency of entertainment tape recorder.
100 Hz
100 KHz
100 MHz
100 GHz

27. Highest frequency in FM recording is ________
4 Hz
40 Hz
40 KHz
40 MHz

28. Effect due to sudden speed change in tape is ______
Flutter effect
Wow effect
Surge effect
Cracking

29. Punched cards are _______
Display system
Sound system
Memory system
None of the mentioned

30. Punched cards are used in ________
Low speed computers
High speed computers
Super computers
Mac devices

31. Printers are ________
Asynchronous devices
Synchronous devices
Unpredictable
None of the mentioned

32. Which of the following category tele printer belong to?
Serial printer
Parallel printer
Laser printer
None of the mentioned

33. Which of the following category line printer belong to?
Serial printer
Parallel printer
Unpredictable
None of the mentioned

34. Printing speed of line printer will be _______
Less than 600 lines/sec
Between 600-1200 lines/sec
Between 600-1200 lines/minute
Geater thean 1200 lines/minute

35. Which of the following doesn’t belong to the class of line printer?
Bar type
Wheel type
Chain type
None of the mentioned

36. Production of graphical image on VDU is called _______
Computer graphics
Virtual graphics
Virtual imaging
Image processing

37. Which of the following is/are used in low speed computers?
Punched cards
Paper tape device
Both punched card and paper tape
None of the mentioned

38. Storage unit is important between input and output devices.
True
False
all of the above
None of the mentioned

39. Piezo electric crystals are low impedance sources.
True
False
all of the above
None of the mentioned

40. Modulation is used for ________
Reducing loss in transmission
Amplification of signal
Conversion of signal
None of the mentioned

41. In line code transmission, signal is represented by ______
Impulses
Train of pulses
DC signal
Continuously varying signal

42. Which of the following process is explained as detection?
Modulation
Demodulation
Amplification
None of the mentioned

43. Which of the following is represented as digital transmission?
Baseband bit stream transfer
Passband bit stream transfer
All of the mentioned
None of the mentioned

44. PCM stands for ________
Pulse create message
Pulse carry modulation
Pulse code modulation
None of the mentioned

45. Codec equipment is used for ______
Source coding
Source decoding
All of the mentioned
None of the mentioned

46. TCP stands for _______
Tele Call Protocol
Transmission Control Protocol
Transmission Carry Protocol
Transmission Control Parity

47. Tele-transmission is the process of transfer of _________
Analog signals
Digital signals
Analog and digital signals
None of the mentioned

48. Which of the following is not a digital modulation method?
FSK
PSK
ASK
None of the mentioned

49. Which of the following represents telemetry?
Fetching data from inaccessible point
Fetching data from accessible point
Communication over telephone
None of the mentioned

50. Telemetry includes data transfer over ______
Wireless modes
Optical fibre link
Computer link
All of the mentioned