BASIC INSTRUMENTATION CH.10

Question 1

A CHOKE PROVIDES FIXED CONTROL

Answer 1

TRUE

Question 2

WHAT IS K IN THE FORMULA Q=K SQUAREROOT/PD

Answer 2

FLOW COEFFICIENT

Question 3

WHY IS IT IMPORTANT THAT A THROTTLING VLV NOT BE PUT IN THE DISCHARGE LINE OF POSITIVE DISPLACEMENT PUMP

Answer 3

SHOULD IT CLOSE IT IS POSSIBLE TO OVER PRESSURE THE LINE AND PUMP

Question 4

EQUIPMENT THAT INCORPORATES ALL THE FEATURES IN A SINGLE ENCLOSURE IS A

Answer 4

FLOW CONTROLLER

Question 5

BESIDES TEMPERATURE GRAVITY IS USED TO ADJUST THE SET POINT OF FLOW CONTROLLERS

Answer 5

FALSE

Question 6

MECHANICAL MEASURING DEVICES INSTALLED WITH ORIFICES PLATES USE FEED BACK MECHANISMS TO PRODUCE A FORCE BALANCE

Answer 6

TRUE

Question 7

THE ELECTRICAL ANALOG OUTPUT OF THE PLC IS LIKE THE TRANSMITTER’S OUTPUT A _________ SIGNAL

Answer 7

4 TO 20 mA

Question 8

IN APPLICATIONS WHERE A THROTTLING VLV REQUIRES CONTROL IT USES 4 DIFFERENT SYSTEMS TO DO THIS THEY ARE

Answer 8

-CONVERTS IT TO A FLOW SIGNAL
-COMPARES THE SIGNAL AGAINST THE DESIRED SET POINT
- MEASURE DIFFERENTIAL PRESSURE
-PRODUCES A SIGNAL TO CONTROL THE VLV

Question 9

A FLOW BEAN HAS WHAT TYPE OF OPENING

Answer 9

BOTH (FIXED AND ADJUSTABLE)

Question 10

ELECTRIC DIFFERENTIAL - PRESSURE TRANSMITTERS ARE THE MOST POPULAR MEANS OF MEASURING FLOW

Answer 10

TRUE

Question 11

IN CONTROLLING GAS FLOW BOTH THE ________ AND _______ ARE LOCATED IN THE LINE IN WHICH FLOW IS TO BE CONTROLLED

Answer 11

CONTROL VLV PRIMARY ELEMENT