Company: Siemens Energy MNNIT allahabad
Difficulty: medium
Which of the following hardness test methods is preferred by mineralogists to help identify minerals? Brinell Hardness test Vickers hardness test Scratch hardness test Rockwell hardness test A U-shaped tube is partially filled with water and connected to a gas supply. The height difference between the two arms of the tube is 30 cm, and the gas pressure in the tube is 10 kPa. What is the absolute pressure of the gas supply? (g = 9.81 m/s² and water density = 998 kg/m³) 12.937 kPa 120.8 kPa 13.5 kPa 10.5 kPa A tank with a height of 4 meters is filled with a fluid of density 1000 kg/m³. A hole is opened at the bottom of the tank, and the fluid starts to flow out. What is the speed of the fluid at the bottom of the tank? 7.67 m/s 8.86 m/s 11.18 m/s 14.14 m/s A shaft with a diameter of 25 mm is subjected to a torsional shear stress of 80 MPa. What is the maximum torque that the shaft can withstand without failing? 24.55 N-m 245.436 N-mm 245.436 N-m 24.55 N-mm A machine has a gear with 20 te