Question 101. A milk fat globule of 2 μm diameter is rising in whole milk of density 1030 kg m-3 and coefficient of viscosity 10-3 Poise. If the fat density is 950 kg m-3, the time needed to rise 10 mm for this fat globule in min is

Question 102. A 9 * 20 cm fluted roller type seed drill is operated at a forward speed of 3 km h-1 in a field of size 120 m * 90 m. The effective ground wheel diameter of the seed drill is 0.5 m and the ratio of ground wheel rpm to the fluted roller rpm is 2. For one complete rotation of each fluted roller, 6.8 g seed is transferred from the seed box to the seed tube. The average time taken for each turn while operating length-wise is 50 s and the total time wasted in refilling the seed box for sowing the entire field is 40 min. The seed rate in kg ha-1 will be

Question 103. Specific heat capacity of dry air and water vapour are 1.005 and 1.88 kJ kg-1 K-1, respectively. In an energy conserving system, 1 kg s-1 air at 300C with constant absolute humidity of 0.02 kg water (kg dry air)-1 is heated up to 650C. Water at the wet bulb temperature of air is then sprayed into the air so that the final temperature of the air-water vapour mixture is 400C. Latent heat of vapourization of water at 700C and 400C are 2334 and 2407 kJ kg-1, respectively. The thermal energy supplied per second during heating in kW is

Question 104. Velocity of an object fired directly in upward direction is given by V = 80 − 32 t, where t (time) is in seconds. When will the velocity be between 32 m/sec and 64 m/sec?

Question 105. In a factory, two machines M1 and M2 manufacture 60% and 40% of the autocomponents respectively. Out of the total production, 2% of M1 and 3% of M2 are found to be defective. If a randomly drawn autocomponent from the combined lot is found defective, what is the probability that it was manufactured by M2?

Question 106. All professors are researchers Some scientists are professors Which of the given conclusions is logically valid and is inferred from the above arguments:

Question 107. If |-2X + 9| = 3 then the possible value of |-X| - X2 would be:

Question 108. During a test, sound level was measured as 90 dB in the operator's cabin on a tractor. Taking reference sound pressure as 2 * 10-5 N m-2, the measured RMS sound pressure in N m-2 is

Question 109. A soil has a void ratio of 0.75 and a specific gravity of 2.66. The value of critical hydraulic gradient at which quick sand condition will occur is

Question 110. The gridiron pipe drainage system is more economical than the herringbone pipe drainage system because