ABSA 4TH CLASS PART A REVIEW QUESTIONS AND ANSWERS

ABSA 4TH CLASS PART A REVIEW QUESTIONS AND 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 - 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 - 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. - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - Answer- c. Transducer