Agricultural Engineering Gate 2016 Questions with Answer

Ques 27 GATE 2016

In a drying experiment, the constant rate of drying is found to be 3.6 kg water m-2 h-1. Dry bulb and wet bulb temperatures of the drying air are 75°C and 37°C, respectively. Latent heats of vaporization at the dry bulb and the wet bulb temperatures are 2321 and 2414 kJ kg-1, respectively. Convective heat transfer coefficient in W m-2 K-1 for the drying operation is

Ques 28 GATE 2016

An air – water vapour mixture is at 35°C and normal atmospheric pressure with absolute humidity of 0.02 kg water vapour kg-1 dry air. Its humid volume in m3 kg-1 dry air is

Ques 29 GATE 2016

A very small particle of diameter dp and density ρp freely settles at constant velocity in a tank of depth L containing liquid of viscosity μl. The density of the liquid is ρl where ρl < ρp. The velocity of particle in the liquid can be expressed as

Ques 30 GATE 2016

A high speed tubular ultracentrifuge with bowl radius of 100 mm and height 500 mm rotates at 20000 rpm and settles starch particles (average diameter of 20µm) on the wall. The ratio of centrifugal force to the gravitational force acting on the particle is

Ques 31 GATE 2016

Match the following (P) Wheat milling (1) Rubber rolls, (Q) Paddy dehusking (2) Abrasive emery roll cylinder, (R) Pulse dehusking (3) break and reduction rolls, (S) Spice grinding (4) Hammer mills

Ques 32 GATE 2016

One hundred kilogram spice is extracted for essential oil using twice the amount of a pure organic solvent. The extracted solid mass contains 5% residual oil (oil-free solid mass basis). The liquid extracted mass contains 20% oil. Assume no solvent is retained by the extracted solid mass. Initial mass of the oil in the spice in kg is

Ques 33 GATE 2016

Milk sterilization kinetics is based on inactivation of index microorganism, Bacillus stearothermophilus. The D-values at 121.1°C and 139.1°C are 1.2 min and 0.019 min, respectively. For 12 log-cycle reduction of this microorganism at 130°C, the processing time in second is

Ques 34 GATE 2016

View factor of a large cylinder of 10 cm in radius and 60 cm in length from a coaxial smaller cylinder of 5 cm radius and the same length is 0.34. View factor of the larger cylinder of itself (concave inner surface) is 0.25. The view factor of the larger cylinder with respect to either annular end is

Ques 35 GATE 2016

Mass transfer coefficient for equimolar counter-diffusion of water vapour in air is 0.4 m s-1 (based on concentration difference). Mass diffusivity of water vapour in air is 3 ×10-4 m2 s-1. For 100 µm diameter droplet, the Sherwood Number (NSh) is equal to

Ques 36 GATE 2016

Hot water at 95°C is used in a plate heat exchanger for heating 2 kg s-1 fruit juice from 45°C to 75°C. Specific heat capacity of fruit juice is 3.7 kJ kg-1 K-1. Final temperature of the hot water is 70°C. Overall heat transfer coefficient is 1122 W m-2 K-1. Heat transfer area is 12.75 m2. The log-mean temperature correction factor is

Ques 37 GATE 2016

In a particle size analysis, the following results are obtained:

Ques 38 GATE 2016

If I were you, I __________ that laptop. It’s much too expensive.

Ques 39 GATE 2016

He turned a deaf ear to my request.
What does the underlined phrasal verb mean?