Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

problem 1: In an engine working on dual cycle the compression ratio is 9. The conditions of air at the beginning of compression are 1 bar, 90o C. Maximum pressure is 6.8 Mpa. Heat supplied is 1700 kJ/kg. Find out:

a) p, V, T at all points.
b) efficiency.
c) MEP.

Qustion 2: In an air standard Otto cycle the condition of air at the beginning is 1 bar, 300 K, compression ratio is 7. The heat supplied is 800 kJ/kg. Determine 

a) p, V, T at all points 
b) efficiency 
c) MEP.

problem 3: The conditions of air at the beginning of compression of a dual cycle are 1 bar, 35o C and 150 litres. The value of the compression is 10 litres and 42 kJ of heat is added at constant volume, 63 kJ of heat is added at constant pressure. Determine

a) air standard efficiency 
b) MEP 
c) clearance percentage
d) cut-off percentage.

problem 4: Derive an expression for the air standard efficiency of diesel cycle and then deduce it for mean effective pressure.

problem 5: With a neat sketch briefly describe the construction and working principle of a solex carburetor.

problem 6: What are the advantages of lubrication.

problem 7: During a brake, on a four cylinder four stroke engine coupled to a hydraulic dynamometer at constant speed the following readings were obtained.  B.P with all cylinders working = 14.7 kW

B.P with cylinder 1 cut off    = 10.14 kW
B.P with cylinder 2 cut off    = 10.3 kW
B.P with cylinder 3 cut off    = 10.36 kW
B.P with cylinder 4 cut off    = 10.21 kW
 
problem 8: A single row impulse turbine develops 132.4 kW at a blade speed of 175 m/s using 2 kg of steam per sec. Steam leaves the nozzle at 400 m/s. Velocity coefficient of the blade is 0.9. Steam leaves the turbine blades axially. Assuming no shock determine the nozzle angle, blade angles at the entry and exit.

problem 9: In a steam nozzle, the steam expands from 4 bar to 1 bar. The initial velocity is 60 m/s and initial temperature is 200o C. Determine the exit velocity if the nozzle efficiency is 92% and the dryness fraction at exit.

problem 10: Derive an expression for critical pressure ratio in a steam nozzle.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M93731

Have any Question? 


Related Questions in Mechanical Engineering

Wat is the resilience of the bolts and joint this time

What is the resilience of the bolts and joint this time? What is the stiffness ratio of this eccentric joint? By how much does the tensile load of 7.40 kips increase the tension in the bolts and reduce the clamping force ...

The maximum force applied to the tip of the allen wrench

The maximum force applied to the tip of the allen wrench before the bolt loosened is 60 N. Assume the wrench has a circular cross section with a radius 2 mm. The length of the short segment (touching the screw) is 3 cm a ...

The jet pump injects water at v1nbsp 40 ms through a 76 cm

The jet pump injects water at V 1  = 40 m/s through a 7.6 cm pipe and entrains a secondary flow of water V 2  = 3 m/s in the annular region around the small pipe. The two flows become fully mixed downstream, where V 3  i ...

For the allen wrench of problem 715 what is the deflection

For the allen wrench of Problem 7.15, what is the deflection of the tip of the wrench when the maximum load of 60 N is applied, just before the bolt loosens? Problem 7.15: The maximum force applied to the tip of the alle ...

A series of calibration tests is conducted on a pressure

A series of calibration tests is conducted on a pressure gage. At a known pressure of 1000 psia it is found that 30 percent of the readings are within 1 psia of the true value. At a known pressure of 500 psia, 40 percent ...

A bar consists of two portions bc and c d of the same

A bar consists of two portions BC and C D of the same material and of the same length L, but of different cross sections. Determine the strain energy of the bar when it is subjected to an axial load P, expressing the res ...

The ground state 1s1 h atom has two hyperfine states f 0

The ground state 1s1 H atom has two hyperfine states, F = 0 and F = 1, which correspond to different relative orientations of the nuclear spin and electron spin. The transition between these two states has a wavelength o ...

A compute the intrinsic gate delay of the nmost given in

(a) Compute the intrinsic gate delay of the nMOST given in the above problem and also in section 661 at the biasing condition given above. (b) Compute the intrinsic power-delay product. (c) Does the load resistor increas ...

Wind tunnel testing of the concrete reef balls used in

Wind tunnel testing of the concrete reef balls used in artificial reefs is proposed. A typical reef ball (e.g. Figure 1.2) has a diameter of 6 ft, and is immersed in sea water. A scale model is prepared with diameter of ...

The lateral base resistance is a fundamental limitation of

The lateral base resistance is a fundamental limitation of high-frequency and high speed performance of BJTs. At low temperatures, deionization of the dopant impurity could increase the base resistance much more than the ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro