95. SEMANAS 2018. Semana Carol (2 parcial)

Question

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

Answer 1

A. They are not powerful

Answer 2

B. The way to refrigerate them

Answer 3

C. They have never been used in aviation

Answer 4

D. None is correct

Answer 5

A. All the cylinders are exposed to the air

Answer 6

B. Because of the A), cooling all the cylinders is easier

Answer 7

C. They normally use odd number ( to avoid deadtime in diametrally opposed cylinders)

Answer 8

D. All are corrects

Answer 9

A. In line and radial

Answer 10

B. In line and two-row

Answer 11

C. Only in line

Answer 12

D. Only radial

Answer 13

A. Are worse of vertical

Answer 14

B. Are better of vertical due to reduced length

Answer 15

C. Are less compact unit

Answer 16

D. They have more vibrations

Answer 17

A. The air that reaches the last cylinder is too hot

Answer 18

B. There is not any problem, they are easy to cool

Answer 19

C. None is correct

Answer 20

D. Vertical cylinders do not need to be refrigerated, they count with a heat radiation system

Answer 21

A. Compression, power, intake and exhaust

Answer 22

B. Power, compression, exhaust and intake

Answer 23

C. Exhaust, intake, power, compression

Answer 24

D. Intake, compression, power and exhaust

Answer 25

A. Normally aspirated, that is called atmospheric

Answer 26

B. Supercharged/turbocharged

Answer 27

C. A) and B) are corrects

Answer 28

D. The only way of aspiration it is the atmospheric one.

Answer 29

A. Valves must open not exactly at TDC and BDC to improve the engine efficiency

Answer 30

B. Valves must close not exactly at TDC and BDC to improve the engine efficiency

Answer 31

C. Valves must open and close exactly at TDC and BDC to improve the engine efficiency.

Answer 32

D. A) and B) are correct

Answer 33

A. Trottle / expansion ice: freezing of condensed water vapor of the air at or near the throttle

Answer 34

B. Static / adiabatic ice: when the ambient is very cold the carburetor can be frozen

Answer 35

C. Fuel / fuel evaporation ice: due to the cooling effect of the evaporation of the fuel

Answer 36

D. Impact / atmospheric ice: water in suspension in the atmosphere comes into contact with cold parts

Answer 37

A. Venturi

Answer 38

B. Gravity

Answer 39

C. Coriollis

Answer 40

A. Right cylinders are odd

Answer 41

B. It is established by the manufacturer

Answer 42

C. It is the same for all engines

Answer 43

D. Left cylinders are even

Answer 44

B. Flexible material

Answer 45

D. Composites

Answer 46

A. Oil control, compression and oil scraper

Answer 47

B. Expansion and oil scraper

Answer 48

C. Oil control and oil scraper

Answer 49

D. None of them

Answer 50

A. Trunk pistons

Answer 51

B. Slipper pistons

Answer 52

C. Hammer pistons

Answer 53

D. A and B are correct

Answer 54

A. It improves lubrication

Answer 55

B. It decreases combustion temperature

Answer 56

C. It improves refrigeration

Answer 57

D. A and C are correct

Answer 58

A. Crankshaft

Answer 59

C. Cylinder head

Answer 60

D. In the cone of the proppeller

Answer 61

A. By pressure

Answer 62

B. By gravity

Answer 63

C. Both are right

Answer 64

D. Both are wrong

Answer 65

A. Inertia forces are not suffered

Answer 66

B. Poor mixtures are avoided

Answer 67

C. A and B are true

Answer 68

D. A and B are false

Answer 69

A. Direct injection

Answer 70

B. Indirect injection

Answer 71

C. By pass injection

Answer 72

D. A and B are true

Answer 73

A. Pressure

Answer 74

B. Gravity

Answer 75

D. Pressure + Splash

Answer 76

C. Coolers

Answer 77

D. Winglets

Answer 78

A. Absolute pressure controller

Answer 79

B. Variable pressure controller

Answer 80

C. Dual unit controller

Answer 81

D. All are correct

Answer 82

A. Lower consumption

Answer 83

B. Lower pressure

Answer 84

C. Lower noises

Answer 85

D. Lower number of cylinders

Answer 86

A. Continental and Bendix/Precision

Answer 87

B. Diesel and Otto

Answer 88

C. A and B are correct

Answer 89

D. A and B are false

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95. SEMANAS 2018. Semana Carol (2 parcial)

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	Created by Ismael Vázquez over 6 years ago

	Copied by Ismael Vázquez over 6 years ago