Power Engineering 3A1 Review (latest update) questions well
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1. A A butane molecule is a straight chain
hydrocarbon mole- cule with the following
chemical formula:
Select one:
A. C4H10
B. C3H8
C. C3H10
D.C4H8
E. C3H10
2. D Reflex angles are greater
than: Select one:
A. 45 degrees
B. 90 degrees
C. 120 degrees
D.180 degrees
E. 270 degrees.
3. B A word that refers to the change in the position
of a body, relative to some reference point is:
Select one:
A. Magnitude
B. Displacement
C. Direction
D.Distance
E. Velocity
4. B Correct term for any change of phase from a
liquid to a vapor is:
Select one:
A. Boiling
B. Evaporation
C. Boiling point
D.Vaporization
E. Fusion
5. D Boyle's Law is one of
constant: Select one:
A. Mass
B.Volume
, Power Engineering 3A1 Review (latest update) questions well
answered passed
C. Pressure
D.Temperature
E. Flow
6. A A steam engine has a piston 20 cm in diameter
and a piston rod of 4 cm diameter. If the
ultimate strength for the rod material is
400,000 kPa and the factor of safety for the rod
is 12 then calculate the maximum allowable
steam pressure.
Select one:
A. 1,333 kPa
B. 1.333 GPa
C. 3333 kPa
D.6031.87 kPa
E. 192,000 kPa
7. A If 1.45 m³ of air at 100 kPa abs and 12°C is
compressed to 950 kPa abs while following the
law PV1.34 = C. Taking R for air = 0.287 kJ/kg K,
find the final volume of air and the mass of air
compressed.
Select one:
A. V2 = 0.27 m³ and mass = 1.77 kg
B.V2 = 0.42 m³ and mass = 3.55 kg
C. V2 = 0.27 m³ and mass = 42.1 kg
D.V2 = 0.42 m³ and mass = 57.5 kg
E. V2 = 0.42 m³ and mass = 42.1 kg
8. D The amount of heat required to convert 10 kg of
water at 60°C into dry saturated steam at 200
kPa is:
Select one:
A. 2455.57 kJ
B. 2511.3 kJ
C. 2706.7 kJ
D.24,555.7 kJ
E. 27,067 kJ
9. A In the following triangle, what is the value of
,Power Engineering 3A1 Review (latest update) questions well
answered passed
tan A ? Select one:
A. 1.33
B. 0.80
, Power Engineering 3A1 Review (latest update) questions well
answered passed
C. 0.75
D.0.6
E. 1.67
10. C The ratio of the amount of heat absorbed per kg
of steam in the boiler, to the amount of heat
absorbed in producing 1 kg of steam at 100°C
from water at 100°C is called the: Select one:
A. Dryness fraction
B. Equivalent evaporation
C. Factor of evaporation
D.Efficiency of steam generation
E. Latent heat of fusion
11. C 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.
Select one:
A. 0.351
B. 0.362
C. 0.434
D.0.474
E. 0.5.
12. D Generally, the boiling point of a hydrocarbon
compound will:
Select one:
A. Decrease with increased carbon chain length
and in- crease with increased branching
B. Decrease with increased carbon chain length
answered passed
1. A A butane molecule is a straight chain
hydrocarbon mole- cule with the following
chemical formula:
Select one:
A. C4H10
B. C3H8
C. C3H10
D.C4H8
E. C3H10
2. D Reflex angles are greater
than: Select one:
A. 45 degrees
B. 90 degrees
C. 120 degrees
D.180 degrees
E. 270 degrees.
3. B A word that refers to the change in the position
of a body, relative to some reference point is:
Select one:
A. Magnitude
B. Displacement
C. Direction
D.Distance
E. Velocity
4. B Correct term for any change of phase from a
liquid to a vapor is:
Select one:
A. Boiling
B. Evaporation
C. Boiling point
D.Vaporization
E. Fusion
5. D Boyle's Law is one of
constant: Select one:
A. Mass
B.Volume
, Power Engineering 3A1 Review (latest update) questions well
answered passed
C. Pressure
D.Temperature
E. Flow
6. A A steam engine has a piston 20 cm in diameter
and a piston rod of 4 cm diameter. If the
ultimate strength for the rod material is
400,000 kPa and the factor of safety for the rod
is 12 then calculate the maximum allowable
steam pressure.
Select one:
A. 1,333 kPa
B. 1.333 GPa
C. 3333 kPa
D.6031.87 kPa
E. 192,000 kPa
7. A If 1.45 m³ of air at 100 kPa abs and 12°C is
compressed to 950 kPa abs while following the
law PV1.34 = C. Taking R for air = 0.287 kJ/kg K,
find the final volume of air and the mass of air
compressed.
Select one:
A. V2 = 0.27 m³ and mass = 1.77 kg
B.V2 = 0.42 m³ and mass = 3.55 kg
C. V2 = 0.27 m³ and mass = 42.1 kg
D.V2 = 0.42 m³ and mass = 57.5 kg
E. V2 = 0.42 m³ and mass = 42.1 kg
8. D The amount of heat required to convert 10 kg of
water at 60°C into dry saturated steam at 200
kPa is:
Select one:
A. 2455.57 kJ
B. 2511.3 kJ
C. 2706.7 kJ
D.24,555.7 kJ
E. 27,067 kJ
9. A In the following triangle, what is the value of
,Power Engineering 3A1 Review (latest update) questions well
answered passed
tan A ? Select one:
A. 1.33
B. 0.80
, Power Engineering 3A1 Review (latest update) questions well
answered passed
C. 0.75
D.0.6
E. 1.67
10. C The ratio of the amount of heat absorbed per kg
of steam in the boiler, to the amount of heat
absorbed in producing 1 kg of steam at 100°C
from water at 100°C is called the: Select one:
A. Dryness fraction
B. Equivalent evaporation
C. Factor of evaporation
D.Efficiency of steam generation
E. Latent heat of fusion
11. C 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.
Select one:
A. 0.351
B. 0.362
C. 0.434
D.0.474
E. 0.5.
12. D Generally, the boiling point of a hydrocarbon
compound will:
Select one:
A. Decrease with increased carbon chain length
and in- crease with increased branching
B. Decrease with increased carbon chain length
