Answer:
6.99 x 10⁻³ m³ / s
Explanation:
Th e pressure difference at the two ends of the delivery pipe due to atmospheric pressure and water column will cause flow of water.
h = difference in the height of water column at two ends of delivery pipe
6 - 1 = 5 m
Velocity of flow of water
v = √2gh
= √ (2 x 9.8 x 5)
= 9.9 m /s
Volume of water flowing per unit time
velocity x cross sectional area
= 9.9 x 3.14 x .015²
= 6.99 x 10⁻³ m³ / s
Answer:
Yes, fracture will occur since toughness (42.4 MPa) is greater than the toughness of the material, 40MPa
Explanation:
Given
Toughness, k = 40Mpa
Stress, σ = 300Mpa
Length, l = 4mm = 4 * 10^-3m
Under which fracture occurred (i.e., σ= 300 MPa and 2a= 4.0 mm), first we solve for parameter Y (The dimensionless parameter)
Y = k/(σπ√a)
Where a = ½ of the length in metres
Y = 40/(300 * π * √(4/2 * 10^-3))
Y = 1.68 ---- Approximated
To check if fracture will occur of not; we apply the same formula.
Y = k/(σπ√a)
Then we solve for k, where
σ = 260Mpa and a = ½ * 6 * 10^-3
So,.we have
1.68 = k/(260 * π * √(6*10^-3)/2)
k = 1.68 * (260 * π * (6*10^-3)/2)
k = 42.4 MPa --- Approximately
Therefore, fracture will occur since toughness (42.4 MPa) is greater than the toughness of the material, 40 MPa
Answer: See explanation
Explanation:
1. How is diesel fuel ignited in a warm diesel engine?
B. Heat compression
2. Which type of diesel injection produces less noise?
A. Indirect injection (IDI)
3. Which diesel injection system requires the use of a glow plug?
A. Indirect injection (IDI)
4. The three phases of diesel ignition include:
C. Ignition delay, repaid combustion, controlled combustion.
5. What fuel system component is used in a vehicle equipped with a diesel engine that is seldom used on the same vehicle when it is equipped with a gasoline engine?
D. Water-fuel separator
6. The diesel injection pump is usually driven by a _________________.
A. Gear off the camshaft
7. Which diesel system supplies high-pressure diesel fuel to all the injectors all of the time?
C. High-pressure common rail
8. Glow plugs should have high resistance when _____________and lower resistance when __________________.
B. Warm/cold
9. Technician A says that glow plugs are used to help start a diesel engine and are shut off as soon as the engine starts. Technician B says that the glow plugs are turned off as soon as a flame is detected in the combustion chamber. Which Technician is correct?
D. Neither Technicians A NOR B
10. What part should be removed to test cylinder compression on a diesel engine?
D. A glow plug
