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Semana Carol (2 parcial)

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95. SEMANAS 2018. Semana Carol (2 parcial)

Question 1 of 24

1

Q9. One of the main problems of the internal combustion engines is:

Select one or more of the following:

A. They are not powerful
B. The way to refrigerate them
C. They have never been used in aviation
D. None is correct

Explanation

Question 2 of 24

1

Q10. One of the characteristics of star engines is:

Select one or more of the following:

A. All the cylinders are exposed to the air
B. Because of the A), cooling all the cylinders is easier
C. They normally use odd number ( to avoid deadtime in diametrally opposed cylinders)
D. All are corrects

Explanation

Question 3 of 24

1

Q11. Two types of cylinder arrangements are:

Select one or more of the following:

A. In line and radial
B. In line and two-row
C. Only in line
D. Only radial

Explanation

Question 4 of 24

1

Horizontal type of cylinder in line:

Select one or more of the following:

A. Are worse of vertical
B. Are better of vertical due to reduced length
C. Are less compact unit
D. They have more vibrations

Explanation

Question 5 of 24

1

Q13. A great problem of vertical cylinder is:

Select one or more of the following:

A. The air that reaches the last cylinder is too hot
B. There is not any problem, they are easy to cool
C. None is correct
D. Vertical cylinders do not need to be refrigerated, they count with a heat radiation system

Explanation

Question 6 of 24

1

Q14. The four-stroke cycle are:

Select one or more of the following:

A. Compression, power, intake and exhaust
B. Power, compression, exhaust and intake
C. Exhaust, intake, power, compression
D. Intake, compression, power and exhaust

Explanation

Question 7 of 24

1

Q15. A way to aspiration in cylinders is:

Select one or more of the following:

A. Normally aspirated, that is called atmospheric
B. Supercharged/turbocharged
C. A) and B) are corrects
D. The only way of aspiration it is the atmospheric one.

Explanation

Question 8 of 24

1

Q16. About the valve timing in Otto cycle:

Select one or more of the following:

A. Valves must open not exactly at TDC and BDC to improve the engine efficiency
B. Valves must close not exactly at TDC and BDC to improve the engine efficiency
C. Valves must open and close exactly at TDC and BDC to improve the engine efficiency.
D. A) and B) are correct

Explanation

Question 9 of 24

1

Q1. Mark the wrong answer about ice formation on carburetors

Select one or more of the following:

A. Trottle / expansion ice: freezing of condensed water vapor of the air at or near the throttle
B. Static / adiabatic ice: when the ambient is very cold the carburetor can be frozen
C. Fuel / fuel evaporation ice: due to the cooling effect of the evaporation of the fuel
D. Impact / atmospheric ice: water in suspension in the atmosphere comes into contact with cold parts

Explanation

Question 10 of 24

1

Q2. Carburetors work thanks to _______ effect

Select one or more of the following:

A. Venturi
B. Gravity
C. Coriollis
D. Magnus

Explanation

Question 11 of 24

1

Q3. The numeration of cylindres in boxer engines:

Select one or more of the following:

A. Right cylinders are odd
B. It is established by the manufacturer
C. It is the same for all engines
D. Left cylinders are even

Explanation

Question 12 of 24

1

Q4. Valves are made of...

Select one or more of the following:

A. Steel
B. Flexible material
C. Iron
D. Composites

Explanation

Question 13 of 24

1

Q5. Name the different types of piston rings

Select one or more of the following:

A. Oil control, compression and oil scraper
B. Expansion and oil scraper
C. Oil control and oil scraper
D. None of them

Explanation

Question 14 of 24

1

Q6. Types of pistons

Select one or more of the following:

A. Trunk pistons
B. Slipper pistons
C. Hammer pistons
D. A and B are correct

Explanation

Question 15 of 24

1

Q7. What is the effect of holes in pistons?

Select one or more of the following:

A. It improves lubrication
B. It decreases combustion temperature
C. It improves refrigeration
D. A and C are correct

Explanation

Question 16 of 24

1

Q8. Where do we find the sparks?

Select one or more of the following:

A. Crankshaft
B. Valves
C. Cylinder head
D. In the cone of the proppeller

Explanation

Question 17 of 24

1

Q1. How does the injection carburetor work?

Select one or more of the following:

A. By pressure
B. By gravity
C. Both are right
D. Both are wrong

Explanation

Question 18 of 24

1

Q2. Advantages of using carburetors

Select one or more of the following:

A. Inertia forces are not suffered
B. Poor mixtures are avoided
C. A and B are true
D. A and B are false

Explanation

Question 19 of 24

1

Q3. Different kind of injections

Select one or more of the following:

A. Direct injection
B. Indirect injection
C. By pass injection
D. A and B are true

Explanation

Question 20 of 24

1

Q4. Which of the following is NOT a method to distribute the oil?

Select one or more of the following:

A. Pressure
B. Gravity
C. Splash
D. Pressure + Splash

Explanation

Question 21 of 24

1

Q5. Which of the following is a Lubrication System component?

Select one or more of the following:

A. Tail
B. Flap
C. Coolers
D. Winglets

Explanation

Question 22 of 24

1

Q6. Which ones are turbocharger control systems?

Select one or more of the following:

A. Absolute pressure controller
B. Variable pressure controller
C. Dual unit controller
D. All are correct

Explanation

Question 23 of 24

1

Q7. Which is the main advantage of continuous injection?

Select one or more of the following:

A. Lower consumption
B. Lower pressure
C. Lower noises
D. Lower number of cylinders

Explanation

Question 24 of 24

1

Q8. Which are the main injection systems used in aviation alternative engines?

Select one or more of the following:

A. Continental and Bendix/Precision
B. Diesel and Otto
C. A and B are correct
D. A and B are false

Explanation