This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Digital Readout Systems”.
1. VDU stands for ____________________
a) Virtual display unit
b) Verbal display unit
c) Variable display unit
d) Visual display unit
View Answer
Explanation: VDU is the short of visual display unit, which act as output device.
2. Which of the following cannot be used for constructing alpha-numeric devices?
a) LED
b) Neon lamp
c) Seven segment display
d) None of the mentioned
View Answer
Explanation: Alpha numeric devices are which can display both alphabetic and numeric characters.
3. Which of the following are closely related to LED?
a) Conductors
b) Semiconductors
c) Superconductors
d) Insulators
View Answer
Explanation: LED’s are constructed using semiconductor materials.
4. Which of the following represent forward bias voltage for LED?
a) Less than 0.7V
b) 1.5 V
c) 2.4 V
d) 5.6 V
View Answer
Explanation: Usually 1.5 V is the forward bias voltage for LED.
5. Which of the following is closely related to LED?
a) Passive device
b) Active device
c) May passive or active
d) None of the mentioned
View Answer
Explanation: LED’s are passive devices.
6. VDU’s are used for displaying ________________
a) Alphabetic letters
b) Numerical characters
c) Graphical contents
d) All of the mentioned
View Answer
Explanation: VDU’s are displays that can display all form of parameters.
7. Line rast technique is used for ___________________
a) Generating character
b) Character alignment
c) Character spacing
d) Character brightening
View Answer
Explanation: Line rast technique is used for generating characters in display unit.
8. CRT can be used for representing ______________
a) Amplitude of signal
b) Rise time of signal
c) Frequency of signal
d) All of the mentioned
View Answer
Explanation: Cathode Ray Tube can be used for representing different parameters of a signal.
9. What will be the response time for LCD?
a) Less than 100ns
b) Less than 100ms
c) 1S
d) Unpredictable
View Answer
Explanation: Usually response time for LCD will be between 20 and 100ms.
10. Which of the following is not true for LCD?
a) Low reliability
b) Short life span
c) Short response time
d) None of the mentioned
View Answer
Explanation: LCD is a device with low reliability, low life span and short response time.
Sanfoundry Global Education & Learning Series – Instrumentation Transducers.
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