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Showing posts from September, 2011

APPLIED HYDRAULICS AND PNEUMATICS

ME55-APPLIED HYDRAULICS AND PNEUMATIC S UNIT I FLUID POWER SYSTEMS AND FUNDAMENTALS UNIT II HYDRAULIC SYSTEM & COMPONENTS UNIT III DESIGN OF HYDRAULIC CIRCUITS UNIT IV PNEUMATIC SYSTEMS AND COMPONENTS UNIT V DESIGN OF PNEUMATIC CIRCUITS What is fluid power? Fluid power is energy transmitted and controlled by means of a pressurized fluid, either liquid or gas. The term fluid power applies to both hydraulics and pneumatics. Hydraulics uses pressurized liquid, for example, oil or water; pneumatics uses compressed air or other neutral gases. Fluid power can be effectively combined with other technologies through the use of sensors, transducers and microprocessors. How fluid power works Pascal's Law expresses the central concept of fluid power: "Pressure exerted by a confined fluid acts undiminished equally in all directions."  An input force of 10 pounds (44.8 N) on a 1-square-inch (6.45 cm2) piston develops a pressure of 10 pounds per square inch (ps

THERMAL ENGINEERING QUESTION

Thermal Engineering Question Bank Sub. Code/Name: THERMODYNAMIC CYCLES Part-A (2 Marks) 1. What is a thermodynamic cycle? 2. What is meant by air standard cycle? 3.. Name the various “gas power cycles". 4. What are the assumptions made for air standard cycle analysis 5. Mention the various processes of the Otto cycle. . 6. Mention the various processes of diesel cycle. 7. Mention the various processes of dual cycle. 9. Define air standard cycle efficiency. 10. Define mean effective pressure as applied to gas power cycles. How it is related to indicate power of an I.C engine? 11. Define the following terms. (i) Compression ratio (ii) Cut off ratio , (iii) .Expansion ratio Part-B (16Marks) 1. Drive and expression for the air standard efficiency of Otto cycle in terms of volume ratio. (16) 2. Drive an expression for the air standard efficiency of Diesel cycle. . (16) 3. Drive an expression for the air standard efficiency of Dual cycle. . (16) 4. Explain the work

METROLOGY TWO MARK QUESTION

ENGINEERING METROLOGY and MEASUREMENTS TWO MARK QUESTIONS AND ANSWERS UNIT I- Concept Of Measurement 1. What is Range of measurement?: The physical variables that are measured between two values. One is the higher calibration value H , and the other is Lower value L, The difference between H, and L, is called range. 2. . What is Resolution: The minimum value of the input signal is required to cause an appreciable change in the output known as resolution. 3. Differentiate between sensitivity and range with suitable example. Example: A Instrument have a scale reading of 0.01mm to 100mm. Here, the sensitivity of the instrument is 0.0lmm i.e. the minimum value in the scale by which the instrument can read. The range is 0.01 to 100mm i.e. the minimum to maximum value by which the instrument can read. 4. Define system error and correction., Error: The deviation between the results of measured value to the actual value. Correction: The numerical value which should be added t