ABSA 4TH CLASS PART A REVIEW |286 questions
with accurate answers
_______ fittings are used to provide proper drainage of water.
Select one:
a. Removable
b. Orifice
c. Eccentric
d. Tapered Ans✓✓✓ c. Eccentric
________ heat causes a change in the temperature of a substance
without changing its state. Select one:
a. Sensible
b. Latent
c. Super
d. Specific
e. Saturated Ans✓✓✓ a. Sensible
_____________ is the internal resistance to an applied external force.
Select one:
a. Strain
b. Stress
c. Ultimate strength
d. Load Ans✓✓✓ b. Stress
,1 psi equals:
Select one:
a. 1 kilopascal
b. 100 kPa
c. 0.145 kPa
d. 6.89 kPa Ans✓✓✓ d. 6.89 kPa
A boiler blowoff system is equipped with slow and fast opening valves.
The quick opening valve is placed: Select one:
a. Closest to the boiler and opened first
b. Furthest from the boiler and opened first
c. Closest to the boiler and opened last
d. Furthest from the boiler and opened last Ans✓✓✓ a. Closest to the
boiler and opened first
A car has an initial velocity of 25km/h and in 84 seconds it accelerates
to 110km/h. How far did it travel while accelerating?
Select one:
a. 2575 m
b. 1575 m
c. 757 m
d. 575 m Ans✓✓✓ b. 1575 m
,A Class "A" fire would involve:
Select one:
a. Gasoline or oil
b. Paint or grease
c. Electrical equipment
d. Wood or coal Ans✓✓✓ d. Wood or coal
A common use for a DC generator is:
Select one:
a. Power supply for an elevator
b. An automobile alternator
c. Emergency power
d. Power factor correction Ans✓✓✓ a. Power supply for an elevator
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 Ans✓✓✓ c. Transducer
A control loop controller:
Select one:
, a. Sends a signal to a primary element
b. Measures the manipulated variable value, eliminating the need of a
primary element
c. Eliminates all setpoint deviation
d. Constantly compares a process variable to the set point Ans✓✓✓ d.
Constantly compares a process variable to the set point
A copper alloy that contains tin, and sometimes zinc, is:
Select one:
a. Brass
b. Bronze
c. White metal
d. Babbit Ans✓✓✓ b. Bronze
A disadvantage of a cast iron boiler is:
Select one:
a. It is subject to corrosion
b. Its difficult assembly
c. Its extremely high cost
d. They are prone to leaks in-between the sections Ans✓✓✓ d. They are
prone to leaks in-between the sections
A fire in which of the following constitutes a Class "C" fire:
Select one:
with accurate answers
_______ fittings are used to provide proper drainage of water.
Select one:
a. Removable
b. Orifice
c. Eccentric
d. Tapered Ans✓✓✓ c. Eccentric
________ heat causes a change in the temperature of a substance
without changing its state. Select one:
a. Sensible
b. Latent
c. Super
d. Specific
e. Saturated Ans✓✓✓ a. Sensible
_____________ is the internal resistance to an applied external force.
Select one:
a. Strain
b. Stress
c. Ultimate strength
d. Load Ans✓✓✓ b. Stress
,1 psi equals:
Select one:
a. 1 kilopascal
b. 100 kPa
c. 0.145 kPa
d. 6.89 kPa Ans✓✓✓ d. 6.89 kPa
A boiler blowoff system is equipped with slow and fast opening valves.
The quick opening valve is placed: Select one:
a. Closest to the boiler and opened first
b. Furthest from the boiler and opened first
c. Closest to the boiler and opened last
d. Furthest from the boiler and opened last Ans✓✓✓ a. Closest to the
boiler and opened first
A car has an initial velocity of 25km/h and in 84 seconds it accelerates
to 110km/h. How far did it travel while accelerating?
Select one:
a. 2575 m
b. 1575 m
c. 757 m
d. 575 m Ans✓✓✓ b. 1575 m
,A Class "A" fire would involve:
Select one:
a. Gasoline or oil
b. Paint or grease
c. Electrical equipment
d. Wood or coal Ans✓✓✓ d. Wood or coal
A common use for a DC generator is:
Select one:
a. Power supply for an elevator
b. An automobile alternator
c. Emergency power
d. Power factor correction Ans✓✓✓ a. Power supply for an elevator
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 Ans✓✓✓ c. Transducer
A control loop controller:
Select one:
, a. Sends a signal to a primary element
b. Measures the manipulated variable value, eliminating the need of a
primary element
c. Eliminates all setpoint deviation
d. Constantly compares a process variable to the set point Ans✓✓✓ d.
Constantly compares a process variable to the set point
A copper alloy that contains tin, and sometimes zinc, is:
Select one:
a. Brass
b. Bronze
c. White metal
d. Babbit Ans✓✓✓ b. Bronze
A disadvantage of a cast iron boiler is:
Select one:
a. It is subject to corrosion
b. Its difficult assembly
c. Its extremely high cost
d. They are prone to leaks in-between the sections Ans✓✓✓ d. They are
prone to leaks in-between the sections
A fire in which of the following constitutes a Class "C" fire:
Select one:
