ABSA Practice 4A – 1 Latest Q & A Graded A+!!

ABSA Practice 4A – 1 Latest Q & A
(4-081-1.16) The output voltage of a shunt DC generator is varied by adjusting the:
Select one:
a. Pole piece air gaps
b. Output current
c. EMF
d. Field rheostat
d


(4-085-1.11) The Bourdon tube is often shaped in the form of a "C", having an arc span of about:
Select one:
a. 270 degrees
b. 90 degrees
c. 180 degrees
d. 200 degrees
a


(4-037-2.7) The extinguishing medium for a Class "D" fire is:
Select one:
a. Carbon dioxide
b. Dry powder
c. Aqueous film forming foam
d. Dry chemical
b


Besides a flashlight, what else is used during a visual inspection of a weld?
Select one:
a. microscopes
b. fluorescent lights
c. magnifying glasses
d. chisels
c


A PLC needs to be able to check itself for safe operation. This is called:

Select one:
a. Start up Check
b. maintenance scan
c. housekeeping scan
d. Self check
c


(4-050-1.1) A check valve____________________.
Select one:
a. Allows flow in one direction only.
b. Uses a heavy spring for setting.
c. requires an inspector's seal to be installed.
d. Has a locking spindle for locking out flow for safety.
a

,(4-047-1.6) Submerged arc welding is a(an)_____ welding process.
Select one:
a. Oxy-acetylene
b. AC electric
c. AC or DC electric
d. DC
c


An SOP is used to

Select one:
a. Make sure each operator runs equipment in a consistently safe and efficient manner
b. Keep track of maintenance costs
c. Help plan equipment maintenance activities
d. Develop PFDs and P&IDs
a


(4-010-2.7) A 7m long bar is pivoted at 2m from the left end. A force of 60N is applied downwards on
the left end and a force of 20N is applied downward on the right end. What would be the clockwise
and counter-clockwise moments about the pivot, due to each force, and in which direction would the
bar rotate?
Select one:
a. 120Nm counter-clockwise, 100Nm clockwise, clockwise rotation.
b. 120Nm counter-clockwise, 100Nm clockwise, counter-clockwise rotation.
c. 80Nm counter-clockwise, 100Nm clockwise, counter-clockwise rotation.
d. 60Nm counter-clockwise, 100Nm clockwise, clockwise rotation.
b


(4-014-2.1) What is the absolute pressure if the gauge pressure in a steam cylinder is 200kPa?
(Atmospheric pressure is 101.3 kPa.)
Select one:
a. 200 kPa
b. 200.3 kPa
c. 301.3 Pa
d. 301.3 kPa
d


4-049-2.8) The three general types of flange connections are the screwed, the Van Stone and the
_____ .
Select one:
a. Ring joint
b. Raised face
c. Welded
d. Bolted
c


4-056-1.8) Boiler chimneys are commonly lined with:
Select one:
a. Insulation
b. Rubber
c. Fire brick
d. Concrete

, c


(4-047-1.15) The filler rod in braze welding is usually made of:
Select one:
a. Alloy steel
b. Brass
c. Aluminium
d. Bronze
d


(4-086-1.2) A sensing element sends its signal to
Select one:
a. a Recorder
b. an air line
c. a Conveyer
d. a Transmitter
d


When using a two-way radio, what do you say when you've heard the message but need to put the
caller on hold?
Select one:
a. Roger that
b. Copy that
c. Standby
d. Come again
c


(4-083-1.7) High voltages include all voltages above _____ V.
Select one:
a. 750
b. 1000
c. 15,000
d. 220
a


(4-052-2.3) A corrugated furnace gives required strength with thinner metal, increases heating surface
and:
Select one:
a. Decreases combustion turbulence
b. Allows for differential expansion and contraction
c. Adds to the overall material cost of the unit
d. Increases the boiler mass
b


(4-085-1.7) A Bourdon tube may be manufactured in the shape of a helix so that
_______________________ than a standard bourdon tube:
Select one:
a. It has enough power and rotation to move the pens of a recorder without the use of gears
b. Higher pressures can be sensed
c. They can fit in narrower enclosures
d. Its final output has less travel