3rd TSSA Part 3A1 - Test (II) UPDATED
ACTUAL Exam Questions and CORRECT
Answers
In the expression 4² = 16, the number '4' is called the _____ of 16. - CORRECT
ANSWER - Square root.
Construction drawings will be drawn to scale and will show: - CORRECT ANSWER -
Three different views, usually plan, front and side view
In the given triangle, calculate the ratio of BC to AC, when angle ADC = 40 degrees, angle BDC
= 20 degrees, angle ACD = 90 degrees, and side DC = 8m. https://ibb.co/C9ydKct - CORRECT
ANSWER - 0.434
The common logarithm of a number is _________ times its natural logarithm. - CORRECT
ANSWER - 2.3026.
A rhomboid is a plane figure that has four (4) sides, with: - CORRECT ANSWER -
Opposite sides parallel and opposite angles equal
Referring to the diagram below, the point marked as 3 represents https://ibb.co/JpsBDn9 -
CORRECT ANSWER - Dry saturated steam
An I-beam under compressive load is, found to be 0.023 mm shorter than the original length.
Given the original length we can find the: - CORRECT ANSWER - Linear strain
Heat transfer due to movement of a fluid is called: - CORRECT ANSWER - Convection
Molten pig iron is used to produce: - CORRECT ANSWER - Cast iron, wrought iron and
steel
,A body with a gravitational force of 2000 N is pulled along a horizontal surface at constant speed
by a rope, which makes an angle of 20° above the horizontal. If the force on the rope is 150 N,
the coefficient of sliding friction is: - CORRECT ANSWER - 0.0704
A steel storage tank is 5 m long, 2 m wide and 4 m high. It is 60% full of ethylene glycol with a
relative density of 1.1. What is the force load exerted by the fluid on one end? - CORRECT
ANSWER - 62.2 kN
White metal used for slow speed and light load applications is composed of: - CORRECT
ANSWER - 10% tin, 15% antimony and 75% lead
The energy that a body contains due to its motion is referred to as: - CORRECT
ANSWER - Kinetic
MgCl2 + Na2Z --> In a balanced equation for this reaction, the product side should be shown as:
- CORRECT ANSWER - MgZ + 2NaCl
A material that is able to stand up under a sudden impact or hard blow is described as: -
CORRECT ANSWER - Tough or having high impact strength
If the temperature of a mild steel bar 10 m long is increased from 15 to 75°C, the change in
length will be: - CORRECT ANSWER - 7.2 mm
The figure below shows a hydraulic jack system used for hoisting cars. Assuming the pressure of
the air is equal to the pressure on the piston, the piston diameter of 27.5 cm, and the pressure
value of 600 kPa that compressor can generate, what is the maximum load (in Newtons) the
piston can raise? https://ibb.co/jG8r06G - CORRECT ANSWER - 35.64 kN
One radian is equal to: - CORRECT ANSWER - 57.3 degrees
, Expansion will result in an increase in a body's surface as well as its: - CORRECT
ANSWER - Volume
A straight aluminum wire 60 m long is subjected to a stress of 90 MPa. Determine the total
elongation of the wire. Assume E = 70 GPa. - CORRECT ANSWER - 77.14 mm
The common and Naperian logarithms for the number 272 are: - CORRECT ANSWER -
2.4346, 5.6058
Determine the total latent heat required to produce 2.3 kg of dry, saturated steam at a pressure of
350 kPa absolute. - CORRECT ANSWER - 4940.6 kJ
If four plates of identical physical dimensions are subjected to the same temperature difference,
the one made of which material will conduct the most heat? - CORRECT ANSWER -
Copper
What is the angle of inclination of a stairway with the floor, if the steps have a tread of 20 cm
and a rise of 18 cm as illustrated in the sketch? https://ibb.co/r3PY31D - CORRECT
ANSWER - 42 degrees
Biological corrosion is caused by the:
1. Bacteria boring into the metal surface and laying their eggs
2. Bacteria eating the metal surface for food as it multiplies every 20 minutes
3. Increased oxygen at or near the surface of the material generated by the bacteria
4. Generation of hydrogen sulphide caused by the bacteria
5. Generation of gases that make the water more acidic and therefore more corrosive -
CORRECT ANSWER - 3, 4, 5
A solid cylinder is 31 cm in diameter by 2.4 m long. It has the same mass as a lead cube with 0.5
m sides. What material is the cylinder likely made of? - CORRECT ANSWER - Mild steel
ACTUAL Exam Questions and CORRECT
Answers
In the expression 4² = 16, the number '4' is called the _____ of 16. - CORRECT
ANSWER - Square root.
Construction drawings will be drawn to scale and will show: - CORRECT ANSWER -
Three different views, usually plan, front and side view
In the given triangle, calculate the ratio of BC to AC, when angle ADC = 40 degrees, angle BDC
= 20 degrees, angle ACD = 90 degrees, and side DC = 8m. https://ibb.co/C9ydKct - CORRECT
ANSWER - 0.434
The common logarithm of a number is _________ times its natural logarithm. - CORRECT
ANSWER - 2.3026.
A rhomboid is a plane figure that has four (4) sides, with: - CORRECT ANSWER -
Opposite sides parallel and opposite angles equal
Referring to the diagram below, the point marked as 3 represents https://ibb.co/JpsBDn9 -
CORRECT ANSWER - Dry saturated steam
An I-beam under compressive load is, found to be 0.023 mm shorter than the original length.
Given the original length we can find the: - CORRECT ANSWER - Linear strain
Heat transfer due to movement of a fluid is called: - CORRECT ANSWER - Convection
Molten pig iron is used to produce: - CORRECT ANSWER - Cast iron, wrought iron and
steel
,A body with a gravitational force of 2000 N is pulled along a horizontal surface at constant speed
by a rope, which makes an angle of 20° above the horizontal. If the force on the rope is 150 N,
the coefficient of sliding friction is: - CORRECT ANSWER - 0.0704
A steel storage tank is 5 m long, 2 m wide and 4 m high. It is 60% full of ethylene glycol with a
relative density of 1.1. What is the force load exerted by the fluid on one end? - CORRECT
ANSWER - 62.2 kN
White metal used for slow speed and light load applications is composed of: - CORRECT
ANSWER - 10% tin, 15% antimony and 75% lead
The energy that a body contains due to its motion is referred to as: - CORRECT
ANSWER - Kinetic
MgCl2 + Na2Z --> In a balanced equation for this reaction, the product side should be shown as:
- CORRECT ANSWER - MgZ + 2NaCl
A material that is able to stand up under a sudden impact or hard blow is described as: -
CORRECT ANSWER - Tough or having high impact strength
If the temperature of a mild steel bar 10 m long is increased from 15 to 75°C, the change in
length will be: - CORRECT ANSWER - 7.2 mm
The figure below shows a hydraulic jack system used for hoisting cars. Assuming the pressure of
the air is equal to the pressure on the piston, the piston diameter of 27.5 cm, and the pressure
value of 600 kPa that compressor can generate, what is the maximum load (in Newtons) the
piston can raise? https://ibb.co/jG8r06G - CORRECT ANSWER - 35.64 kN
One radian is equal to: - CORRECT ANSWER - 57.3 degrees
, Expansion will result in an increase in a body's surface as well as its: - CORRECT
ANSWER - Volume
A straight aluminum wire 60 m long is subjected to a stress of 90 MPa. Determine the total
elongation of the wire. Assume E = 70 GPa. - CORRECT ANSWER - 77.14 mm
The common and Naperian logarithms for the number 272 are: - CORRECT ANSWER -
2.4346, 5.6058
Determine the total latent heat required to produce 2.3 kg of dry, saturated steam at a pressure of
350 kPa absolute. - CORRECT ANSWER - 4940.6 kJ
If four plates of identical physical dimensions are subjected to the same temperature difference,
the one made of which material will conduct the most heat? - CORRECT ANSWER -
Copper
What is the angle of inclination of a stairway with the floor, if the steps have a tread of 20 cm
and a rise of 18 cm as illustrated in the sketch? https://ibb.co/r3PY31D - CORRECT
ANSWER - 42 degrees
Biological corrosion is caused by the:
1. Bacteria boring into the metal surface and laying their eggs
2. Bacteria eating the metal surface for food as it multiplies every 20 minutes
3. Increased oxygen at or near the surface of the material generated by the bacteria
4. Generation of hydrogen sulphide caused by the bacteria
5. Generation of gases that make the water more acidic and therefore more corrosive -
CORRECT ANSWER - 3, 4, 5
A solid cylinder is 31 cm in diameter by 2.4 m long. It has the same mass as a lead cube with 0.5
m sides. What material is the cylinder likely made of? - CORRECT ANSWER - Mild steel
