ABSA 4A

ABSA 4A Questions And Detailed Answers100% __________ refers to the transmission of electromagnetic waves: a. Convection b. Expansion c. Conduction d. Radiation - d. Radiation .Isolation of equipment prior to work: a. is necessary when any form of energy poses a hazard to workers b. is not necessary to prevent injury or death c. is done by tradesmen prior to issuance of the safe work permit d. cannot be done until the safe work permit is issued - a. is necessary when any form of energy poses a hazard to workers .What are the inside dimensions of schedule 40 pipe of 114.3 OD: a. 108.2 b. 120.32 c. 101.31 d. 102.16 - d. 102.16 4th class power engineer can take charge of Power Plant as a shift Engineer: a. Up to 500 kW b. Up to 1000 kW c. Up to 5000 kW d. Up to 10000 kW - c. Up to 5000 kW 19. Copper is obtained from copper ore, which is melted and: a. cool at a controlled temperature b. then further refined by electrolysis c. small amount of zinc is added in the process to improved machining qualities d. kept at a pre-determine temperature for about 24 hours - b. then further refined by electrolysis 31.How many types of labels are identified in the WHMIS system: a. one b. two c. five d. four - b. two 79.Short retractable soot blowers usually penetrate the furnace waterwall _________ through special openings: a. 50 - 75 mm b. 30 - 45 mm c. 10 - 20 mm d. 25 - 50 mm - d. 25 - 50 mm A _________ may be filled with a vaporizing liquid that varies in pressure with temperature: a. mercury switch thermostat b. modulating thermostat c. remote bulb thermostat d. bimetal - c. remote bulb thermostat A 70 kg barrel is rolled up a 3.5m ramp to a platform 2.5m above ground level. What work will be required: a. 1226.25 J b. 1266.25 J c. 1716.75 J d. 1926.75 J - c. 1716.75 J A 100 kg crate is raised a vertical distance of 100m. What work will be required?: a. 10.0 kJ b. 98.1 kJ c. 169.2 kJ d. 196.3 kJ - b. 98.1 kJ A cold pipe becomes hot from condensate. What type of mechanism transfer the heat to the pipe outer surface? a. Convection b. Expansion c. Conduction