26. Usually in the window air conditioner, the expansion device used is :
27. —For air with a relative humidity of 80% :
28. The density of water at one atmosphere pressure and 30°C is approximately
29. Oil flows through a 200 mm diameter horizontal pipe with friction factor / = 0.022 and length 500 m. The volumetric flow rate is 0.2 m3/s. The head loss due to friction in meters is (assume g - 9.8 m/s2) :
30. For the stability of a floating body, under the influence of gravity alone, which of the following is TRUE?
31. A phenomenon is modeled using n dimensional variables with m primary dimensions.The number of non-dimensional variables is:
32. For a Newtonian fluid :
33. A venturimeter is used to measure :
34. The SI unit of kinematic viscosity is :
35. A static fluid can have :
36. For a laminar flow through a circular pipe, Reynolds number will be :
37. Two diffuse gray parallel plates, separated by distance, have surface temperatures of 127°C and 27°C. If the cmissivity of the surface are 0.8 and the Stefan-Boltzmann constant is 5.67 10' W/mK the net radiation heat exchanges rate in W/m2 between the two plates is:
38. In a condenser of a power plant, the steam condenses at temperatures of 500 C. The cooling water enters at 20°C and leaves at 35°C. The logarithmic mean temperature difference (LMTD) of the condenser is:
39. A fin efficiency is defined as :
40. Thermal conductivity of pure Copper at room temperature is approximately :
41. Critical radius of insulation for cylindrical body is (if k is thermal conductivity of insulation and h is convection heat transfer coefficient):
42. The Log Mean Temperature Difference (LMTD) of a double pipe heat exchanger will be usually:
43. The crank radius of a single-cylinder I.C. engine is 50 mm and the diameter of the cylinder is 70 mm. The swept volume of the cylinder in cm3 is
44. In an air-standard Otto-cycle, the compression ratio is 10. The condition at the beginning of the compression process is 100 kPa and 300K. Heat added at constant volume is 1500 kJ/kg, while 700 kJ/kg of heat is rejected during the other constant volume process in the cycle. Specific gas constant for air = 0.287 kJ/kgK. The mean effective pressure (in kPa) of the cycle is:
45. The stroke andboreof a four stroke SIengine are 250 mm and 200 mm respectively.The clearance volumeis 0.001 m3. If thespecific heat ratio is 1.4, the air-standard cycleefficiency of the engine is :
46. A Carnot cycle is having an efficiency of 0.78. If the temperature of the high temperature reservoir is 1241 K, what is the temperature of low temperature reservoir?
47. A solid circular shaft transmits a torqueof 80 Nm. If the allowable shear stress of the'material is 150MPa,assuming a factorof safety of 2, the minimum allowable designdiameter in mm is :
48. A clutch has outer and inner diameters 10 cm and 4 cm respectively. Assuming a uniform pressure of 2 x 106 Pa and coefficient'of friction of liner material is 0.4, the torque carrying capacity of the clutch is :
49. The most appropriate description of a Helical gear is :
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
Powered By:Omega Web Solutions