AUTO TECH/TASK SHEET
6th Edition
ISBN: 9780135257630
Author: Halderman
Publisher: PEARSON
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Chapter 25, Problem 6CQ
Two technicians are discussing the term turbo lag. Technician A says that it refers to the delay between when the exhaust leaves the cylinder and when it contacts the turbine blades of the turbocharger. Technician B says that it refers to the delay in boost pressure that occurs when the throttle is first opened. Which technician is correct?
- a. Technician A only
- b. Technician B only
- c. Both Technicians A and B
- d. Neither Technician A nor B
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Problem 3.30
A piston-cylinder device contains 0.85 kg of refrigerant- 134a at -10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 100 kPa. Now, heat is transferred to refrigerant-134a until the temperature is 15°C. Determine (a) the final pressure, (b) the change in the volume of the refrigerant, and (c) the change in the enthalpy of the refrigerant-134a.
please show Al work step by step
Part 1
The storage tank contains lubricating oil of specific gravity 0.86 In one inclined side of the tank,
there is a 0.48 m diameter circular inspection door, mounted on a horizontal shaft along the centre
line of the gate. The oil level in the tank rests 8.8 m above the mounted shaft. (Please refer table
01 for relevant SG, D and h values).
Describe the hydrostatic force and centre of pressure with the aid of a free body diagram of the
inspection door.
Calculate the magnitude of the hydrostatic force and locate the centre
of pressure.
45°
Estimate the moment that would have to be applied to the shaft to
open the gate.
Stop
B
If the oil level raised by 2 m from the current level, calculate the new
moment required to open the gate.
Figure 01
Chapter 25 Solutions
AUTO TECH/TASK SHEET
Ch. 25 - What are the reasons why supercharging increases...Ch. 25 - Prob. 2RQCh. 25 - What are the advantages and disadvantages of...Ch. 25 - Prob. 4RQCh. 25 - Whit turbocharger control valves are needed for...Ch. 25 - The term volumetric efficiency refers to the...Ch. 25 - Boost pressure is generally measured in__________....Ch. 25 - Which valve is used on a factory supercharger to...Ch. 25 - How are most superchargers lubricated? a. By...Ch. 25 - How are most turbochargers lubricated? a. By...
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