ABSA 4A questions with verified answers
__________ refers to the transmission of electromagnetic waves:
a. Convection
b. Expansion
c. Conduction
d. Radiation Ans✓✓✓ 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 Ans✓✓✓ 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 Ans✓✓✓ d. 102.16
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 Ans✓✓✓ 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 Ans✓✓✓ b. two
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 Ans✓✓✓ c. Up to 5000 kW
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 Ans✓✓✓ 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 Ans✓✓✓ c. remote bulb thermostat
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 Ans✓✓✓ b. 98.1 kJ
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 Ans✓✓✓ c. 1716.75 J
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
d. Radiation Ans✓✓✓ c. Conduction
A conductor carrying current in a magnetic field tends to move at right
angles to the field is the basic principle of:
a. split ring and brushes
b. generator action
c. slip ring and brushes
d. motor action Ans✓✓✓ d. motor action
A firetube boiler can tolerate lower quality water because:
a. they are not used for high quality steam
b. they are quick to respond to load changes
c. they contain a large volume of water
d. there are no small water passages Ans✓✓✓ d. there are no small
water passages
A freight train travels a total distance of 125 km in 3 hours. What was its
average speed?:
a. 35.12 m/s
b. 32.51 m/s
c. 23.15 m/s
__________ refers to the transmission of electromagnetic waves:
a. Convection
b. Expansion
c. Conduction
d. Radiation Ans✓✓✓ 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 Ans✓✓✓ 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 Ans✓✓✓ d. 102.16
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 Ans✓✓✓ 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 Ans✓✓✓ b. two
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 Ans✓✓✓ c. Up to 5000 kW
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 Ans✓✓✓ 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 Ans✓✓✓ c. remote bulb thermostat
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 Ans✓✓✓ b. 98.1 kJ
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 Ans✓✓✓ c. 1716.75 J
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
d. Radiation Ans✓✓✓ c. Conduction
A conductor carrying current in a magnetic field tends to move at right
angles to the field is the basic principle of:
a. split ring and brushes
b. generator action
c. slip ring and brushes
d. motor action Ans✓✓✓ d. motor action
A firetube boiler can tolerate lower quality water because:
a. they are not used for high quality steam
b. they are quick to respond to load changes
c. they contain a large volume of water
d. there are no small water passages Ans✓✓✓ d. there are no small
water passages
A freight train travels a total distance of 125 km in 3 hours. What was its
average speed?:
a. 35.12 m/s
b. 32.51 m/s
c. 23.15 m/s
