Process Instrument and Control Quiz Questions Test1

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1. A device for determining die value or magnitude of a quantity or variable :
sensor	transducer
gauge	instrument

2. Determining moisture in steam by measuring the temperature in a throttling calorimeter is an example of :
direct measurement	indirect measurement
measurement by comparison	measurement by calibration

3. The closeness with which the reading of an instrument approaches the true value of the variable being measured is called :
accuracy	precision
sensitivity	resolution

4. Errors due to assignable causes are called :
static errors	systematic errors
calibration errors	random errors

5. Pick up the appropriate word for A pointer moving over a scale :
instrument	indicator
transducer	gauge

6. Pick up the appropriate word for A reading obtained from the motion of a pointer on a scale :
analog	digital
display	indicator

7. Pick up the appropriate word for The reading displayed as a number, a series of holes on a punched card, or a sequence of pulses on magnetic tape :
pulse train	digital
analog	numeral

8. For studying detailed variations with time, one uses :
indicator	digital indicator
recorder	integrator

9. The condition of how much successive readings differ from one another for a fixed value of the variable is called :
accuracy	error
sensitivity	precision

10. The ratio of output signal or response of the instrument'" to a change in input or measured variable is called :
sensitivity	precision
resolution	threshold

11. The smallest change in measured value to which the instrument will respond is called
accuracy	precision
amplification	resolution

12. It responds directly to the measured quantity, producing a related motion or signal :
sensing element	transducer
transmitter	indicator

13. Which of the following is used to count the number of brass items passing on a conveyor line, when no contact is permitted with the object:
event counter	mechanical counter
magnetic pick up	photoelectric cell

14. Which of the following does not pertain to timing device :
charging of a condenser	flow of oil through a dash pot
release of air through a nozzle	piezoelectric crystal

15. Motion of fast-moving systems may be timed and studied by means of a :
stroboscope	piezoelectric crystal
electronic timer	chronometer

16. In which device the input motion changes the inductive coupling between primary and secondary coils :
potentiometer	synchro
collimator	protractor

17. Which effect is useful in measuring rapidly varying forces :
piezoelectric	strain gauge
photovoltaic	pneumatic gauging

18. Pressure measuring devices are not based on:
measure of an equivalent height of liquid column	measure of the force exerted on a fixed area
measure of some change in electrical or physical characteristics of the fluid	area measurement by polar planimeter

19. Which of the following may be measured by the deflection of an elastic element, by balancing against a known force, by the acceleration produced in an object of known mass :
force	pressure
temperature	level

20. The sensitivity of reading of manometer can be increased by :
inclining the manometer rube	using low specific gravity fluid
application of optical magnification	use of level sensing device