ABSA 4TH CLASS PART A REVIEW UPDATED ACTUAL Questions and CORRECT Answers

ABSA 4TH CLASS PART A REVIEW
UPDATED ACTUAL Questions and
CORRECT Answers
When applying to write a Power Engineer certificate of competency examination, the candidate
must: Select one:
a. Undergo mandatory drug testing
b. Hold the next lower class of qualification
c. Pass a criminal records check

d. Pass both a written and oral examination - CORRECT ANSWER - b. Hold the next
lower class of qualification


A machine lifts a load of 12kN with an applied effort of 4kN. What distance will the load move
if the effort moves a distance of 8m and the efficiency of the machine is 70%?
Select one:
a. 0.54 m
b. 3.81 m
c. 1.87 m

d. 0.38 m - CORRECT ANSWER - c. 1.87 m


Which of these is the "Mechanical Refrigeration Code"?
Select one:
a. ASME MRC
b. CSA B51.
c. CSA B52.

d. ASME Section I. - CORRECT ANSWER - c. CSA B52.


In order to ensure safe and continuous operation of a pressure reducing valve, the valve station
should have _________________.

,Select one:
a. A safety valve on the high-pressure side
b. A bypass line, plus a safety valve and pressure gauge on the low-pressure side
c. Thermometers on the inlet and outlet piping

d. A strainer immediately downstream of the valve - CORRECT ANSWER - b. A bypass
line, plus a safety valve and pressure gauge on the low-pressure side


If the power dissipated by a resistor is 1.2 kW when supplied with 110 V, the amperage will be
_____ A. Select one:
a. 91.666
b. 19.006
c. 10.91

d. 132 - CORRECT ANSWER - c. 10.91


The inclined "U" tube manometer:
Select one:
a. Will measure pressure in MPa
b. Can only be used with mercury
c. Is more accurate than the "U" tube manometer

d. Is more difficult to read than the U-tube manometer - CORRECT ANSWER - c. Is more
accurate than the "U" tube manometer


A valve which gives good throttling action, takes less actuator force, but does not seal well is a:
Select one:
a. Double seated valve
b. Reverse acting valve
c. Single seated valve

d. Direct acting valve - CORRECT ANSWER - a. Double seated valve

,The main component of any computer is the:
Select one:
a. Keyboard
b. Screen
c. Memory

d. Central processing unit - CORRECT ANSWER - d. Central processing unit


In most sizes of pipe, Schedule 40 corresponds to _____ wall thickness. Select one:
a. Welded only
b. Threaded only
c. Extra strong (XS)

d. Standard - CORRECT ANSWER - d. Standard


A reducing agent or fuel could be:
Select one:
a. Carbon monoxide
b. A heavy metal oxide
c. Hydrogen peroxide

d. Concentrated Sulphuric acid - CORRECT ANSWER - a. Carbon monoxide


A control device which will change one form of energy into another form of energy is the: Select
one:
a. Logic device
b. Primary element
c. Transducer

d. Transmitter - CORRECT ANSWER - c. Transducer


The __________ valve requires specific and routine lubrication.

, Select one:
a. Butterfly
b. Globe
c. Check

d. Tapered plug - CORRECT ANSWER - d. Tapered plug


With reference to scalars and vectors, a space diagram:
Select one:
a. Shows the relationship of time to the vector.
b. Illustrates a system of vectors.
c. Shows the relationship of the scalar to the vector.

d. Illustrates a system of scalars. - CORRECT ANSWER - b. Illustrates a system of
vectors


Brass and bronze are alloys of:
Select one:
a. iron
b. copper
c. aluminum

d. lead - CORRECT ANSWER - b. copper


PLC's for Burner Management Systems can:
Select one:
a. Have limited field configurations
b. Be used without any field testing
c. Be set up by technicians at burner repair companies

d. Be programmed by operators - CORRECT ANSWER - a. Have limited field
configurations