ABSA 4th Class Power Engineering Part A | Certification Exam Review | Comprehensive Question & Answer Guide

ABSA 4TH CLASS PART A REVIEW
1. When applying to write a Power Engineer certificate of competency examina-

tion, 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

Answer b. Hold the next lower class of qualification


2. 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

Answer c. 1.87 m


3. Which of these is the "Mechanical Refrigeration Code"?

Select one

a. ASME MRC


b. CSA B51.


c. CSA B52.


d. ASME Section I.

Answer c. CSA B52.


4. 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

Answer b. A bypass line, plus a safety valve and pressure gauge on the low-pressure side

5. 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

Answer c. 10.91


6. 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

Answer c. Is more accurate than the "U" tube manometer

7. A valve which gives good throttling action, takes less actuator force, but does

not seal well is a

Select one

a. Double seated valve