QA Assignmen

1. Advantages of photodiode:
Select one:
a. It is Very small
b. Voltage generating characteristic
c. It has fast time response
d. It has slow response
2. Advantages of PLCs than Hard wired Relay:
Select one:
a. easily programmable
b. Highly reliable
c. None of these
d. both Highly reliable and easily programmable
3. Approximately 400nm to 760 nm range is for
Select one:
a. Visible light band
b. Far Infrared
c. Ultraviolet
d. Microwave
4. Discrete state process control is a particular .......... through which the process accomplishes some objective.
Select one:
a. Events
b. on/off events
c. relay logic events
d. sequence of events
5. Fluid flow through pipes is measured by converting flow into ----- by a restriction in the flow system
Select one:
a. pressure
b. Flow velocity
c. displacement
d. flow rate

6. For Metal Production facilities, ….. are used
Select one:
a. Total Radiation Pyrometer
b. both IR pyrometers and Total Radiation Pyrometer
c. IR pyrometers
d. None of these
7. Holding current for an SCR is best described as:
Select one:
a. the amount of current required to maintain conduction
b. the current required before an SCR will turn-on
c. the minimum current required for turn-off
d. the gate current required to maintain conduction

8. How many watts of power are emitted by a 1 cd source?
Select one:
a. 14 mW
b. 18.4 W
c. 14 W
d. 18.4mW
9. LVDT is used........
Select one:
a. None of these
b. To measure mass displacement
c. As an accelerometer
d. Both As an accelerometer and To measure mass displacement
10. PLCs are _____________ designed for use in the control of a wide variety of manufacturing machines and systems.
Select one:
a. special-purpose industrial computers
b. personal computers
c. All of these.
d. electromechanical systems

11. Pressure to displacement conversion can be carried out with
Select one:
a. both Bellows and Diaphragm
b. LVDT