Description : A gas (density = 1.5 kg/m3 , viscosity = 2 10 -5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The ... flowing at 3 m/s will be (A) 8400 Pa/m (B) 12600 Pa/m (C) 18900 Pa/m (D) 16800 Pa/m
Last Answer : (B) 12600 Pa/m
Description : Hand compression sprayer , the pumping is required to maintain the normal pressure of a. 1-3.5kg/cm2.. b. 1.5-3.5kg/cm2. d. None of above
Last Answer : Ans- c. 2-3.5kg/cm2.
Description : Under what condition a convergent divergent nozzle required ?
Last Answer : When pressure ratio is greater than critical pressure ratio.
Description : Shan bought 30 liters of milk at the rate of Rs.8 per liter. He got it churned after spending Rs.10 and 5kg of cream and 30 liter of toned milk were obtained. If he sold the cream at Rs.30 per kg and toned milk at Rs.4 per liter, his profit in the transaction is: A. 20% B. 8% C. 30% D. 40%
Last Answer : Answer – B .8% Explanation: CP =Rs.(30 x 8 + 10) = Rs.250 SP = Rs. (30 x 5 + 30 x 4) = Rs.270 Gain% = (20/250 x 100)% = 8%
Description : Standard quantity of material per unit 5KG. Standard Price Rs 5 per KG. actual number of units 400 units. Actual quantity 2,200KG and price of material Rs 4.80 per kg. Calculate material price. a) 100(F) b) 500(A) c) 440(F) d) 600(F)
Last Answer : The standard quantity of material per unit is 5KG, so the standard quantity for 400 units would be: Standard quantity = 5KG/unit x 400 units = 2000KG The standard price per KG is Rs 5, so the ... material cost was lower than the standard material cost. Option (c) is the correct answer: 440(F).
Description : Standard bag of cement in ……… kg a) 52 kg b) 30.5kg c) 10.7kg d) 50 kg*
Last Answer : d) 50 kg*
Description : In 1 kg mixture of iron and carbon, 40% is carbon. How much iron should be added so that the proportion of carbon becomes 20% a)1.5kg b)2kg c)3kg d)5kg e)1kg
Last Answer : E Quantity of the mixture : Quantity of iron = 20 : 20 = 1 : 1 Given that quantity of the mixture = 1 kg Hence quantity of iron to be added = 1 kg
Description : In the natural draft cooling tower_________ is not required a) Fan b) tower c) Nozzle d) none of the above
Last Answer : Fan
Description : A mass of 5kg is 100m above a given datum where local g = 9.75 m/s2 . Find the gravitational force in newtons. (Formula: Fg= mg/k ) a. 48.75 N b. 50 N c. 45 N d. None of the above
Last Answer : 48.75 N
Description : Injection pressure of fuel nozzle in diesel engine is a) 30-45 kg/cm2 b) 50-100 kg/cm2 c) 120-200 kg/cm2 d) 200 kg/cm2
Last Answer : c) 120-200 kg/cm2
Description : Under what circumstances would there be an increase in pressure in a diver¬gent nozzle ?
Last Answer : For subsonic flow at inlet section of a diffuser a lower velocity and higher pressure will exist at the exit section. For supersonic isentropic flow at the inlet section a higher velocity and lower pressure ... if a shock wave occurs in the diffuser then a higher pressure will exist at the exit.
Description : In a sprayer overlapping can be increased by increasing a) Nozzle diameter b) Pressure c) Discharge d) Height of nozzle Ans. d
Last Answer : ans d
Description : Fan nozzle mostly used for pressure spraying. b. high c. moderate d. None of above
Last Answer : Ans- b. low
Description : Junior hoe consist of and attached to the framework with hinge arrangement a) Reversible showers, nozzle body b) Reversible shovels, curved tynes c) Reversible shovels, curved tyres d) Pressure regulator, spray lance
Last Answer : Reversible shovels, curved tynes
Description : A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure ofabout 67 kg/cm. The refrigerant used is (a) Ammonia (b) Carbon dioxide (c) Freon (d) Brine
Last Answer : Ans: b
Description : Foot or pedal sprayer developed Kg/cm^3 Pressure. a. 17-21. c. 18-25 b. 17- 28. d. 20-25
Last Answer : 17-21.
Description : Knapsack hand compression sprayer develops pressure between a) 2 to 3.5 kg/cm b) 3 to 12 kg/cm c) 12 to 35 kg/cm d) None of the above
Last Answer : 3 to 12 kg/cm
Description : The unit of pressure in S.I. units is (a) kg/cm2 (b) mm of water column (c) pascal (d) dynes per square cm (e) bars
Last Answer : Answer : c
Description : Knapsack hand compression sprayer develops pressure b. 1.5-3.5kg/cm2. c. 2-3.5kg/cm2. d. None of above
Last Answer : Ans- a. 3 to 12kg/cm2.
Description : The specific heat at constant volume is A. the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure B. the amount of heat required to raise ... to raise the temperature of 1 kg of water through one degree D. any one of the above
Last Answer : Answer: B
Description : What is the effect of friction on flow of steam through a nozzle ?
Last Answer : To decrease both mass flow rate and wetness of steam.
Description : When maximum discharge is obtained in nozzle ?
Last Answer : At the critical pressure ratio.
Description : Name of instrument used for testing of spray nozzle a) Patternator b) Aerometer c) Galvanometer d) Piezometer Ans. a
Last Answer : ans a
Description : A flat fan nozzle is suitable for a) Foliage spray b) Insect control c) Spot spray d) Herbicide spray
Description : . Fan nozzle forms narrow. spray pattern. a. large c. Straight. d. None of above
Last Answer : Ans- b. elliptical.
Description : Hallow cone nozzle – liquid is fed into whirl chamber through entry or through a fixed spiral passage to give rotation motion. a. Axial b. Radial c. tangential. d. None of above
Last Answer : Ans- c. tangential.
Description : It is the part of cone nozzle which imparts rotation to the liquid. b. Cone plate c. Round plate d. None of above
Last Answer : Ans- a. Swirl plate
Description : The conventional type of Mower consists of which of the following a) Wearing Plate b) Nozzle c) Air Chamber d) None of the above
Last Answer : Wearing Plate
Description : nozzle which forms narrow elliptical spray pattern. a) Hollow cone nozzle b) Hard cone nozzle c) Solid cone nozzle d) Fan nozzle
Last Answer : Fan nozzle
Description : Basic components of sprayer is a) Nozzle body b) Spray boom c) Nozzle cap d) All of the above
Last Answer : All of the above
Description : Nozzle diameter of hand atomizer is between ………… to ………… a. 0.7 – 1.5. c. 1.1- 1.5 b. 0.6 – 1.6. d 0.8 to 1.8
Last Answer : 0.6 – 1.6.
Description : Component to remove suspended matter large than a predetermined size from fluid. a. Relief valve. c. Filter b. Spray gun. d. Nozzle
Last Answer : Filter
Description : Nozzle consists of components a) Washer b) Vortex plate c) Strainer d) All of the above
Description : is the types of nozzle used in sprayers a) Hollow cone type of nozzle b) Solid cone type nozzle c) Fan type nozzle d) All of the above
Description : Basic components of sprayer. a. Nozzle body b. Nozzle boss c. Filter d. Spray gun e. All of the above
Description : Open system usually encloses which of the following devices? A. Compressor B. Turbine C. Nozzle D. All of the above
Description : A block of weight 20 kg slides with an initial velocity of 2 m sec down an inclined plane on to a spring of stiffness 10 kg/cm. If the co--efficient of friction is 0.2, angle ? = 30 the ratio of ... be a.More than one b.One c.Less than one d.Depends on the stiffness of spring e.None of the above
Last Answer : a. More than one
Description : A 2 kg block is dropped from a height of 4 metre onto a spring of force constant k = 1960 N/m. The spring will be compressed through a.1 cm b.4.5 cm c.3 cm d.8 cm e.107 dynes
Last Answer : d. 8 cm
Description : A body weighing 500 kg falls 8 cm and strikes a 500 kg/cm spring. The deformation of the spring will be a.?8 cm b.8 cm c.4 cm d.20.5 cm e.2 cm
Last Answer : c. 4 cm
Description : A couple applied to a flywheel of mass 5 kg and of radius of gyration 20 cm produces an angular acceleration of 4 radians/sec2. The torque applied in dyne cm is a.8 x 104 b.8 x 106 c.8 x 107 d.8 x 108 e.8 x 1010
Last Answer : b. 8 x 106
Description : A body weighing one tonne falls through 8 cm on to a spring of stiffness 500 kg/cm the spring will be compressed through a.8 cm b.6 cm c.4 cm d.10 cm e.12 cm
Last Answer : a. 8 cm
Description : A jet of water of cross-sectional area 20 sq. cm impinges on a plate at an angle of 60? with a velocity of 10 m/sec. Neglecting the friction between the jet and plate (density of water 1000/9.81 kgm-1 sec2 per cubic meter), the ... a.15 - 20 kg b.20 - 25 kg c.5 - 10 kg d.25 - 30 kg e.10 - 15 kg
Last Answer : a. 15 - 20 kg
Description : A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from restits speed after 3 seconds wil be a.10.9 rad/sec b.19.0 rad/sec c.51.2 rad/sec d.3.33 rad/sec e.16.35 rad/sec
Last Answer : d. 3.33 rad/sec
Description : A dash pot consists of a cylinder 10 cm in diameter in which slides a piston 12 cm long having a radial clearance of 1 mm. The cylinder is filled with oil having a viscosity of 1 poise. What will be the resistance offered ... with a velocity of 3 cm/sec a.1090 kg b.100 kg c.10900 kg d.10 kg e.50 kg
Last Answer : c. 10900 kg
Description : Why high latent heat of vaporisation is desirable in a refrigerant ?
Last Answer : A high latent heat of vaporisation of refrigerant results in small amount of refrigerant and thus lesser circulation system of refrigerant for same tonnage.
Description : Unit power available for crop production is about 0.54hp/ha whereas desirable level is about ……. b. 2hp/ha c. 3hp/ha d. 2.5 hp/ha
Last Answer : Ans- a. 1hp/ha
Description : is the identification of energy consumption level, which is desirable as a management objective to work towards energy conservation a) Recording b) Targeting c) Analysing d) Monitoring
Last Answer : Targeting
Description : An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is (a) feasible (b) impossible (c) possible (d) possible, but with lot of sophistications (e) desirable.
Last Answer : Answer : d
Description : What are the right amount of ingredients in grams needed for a recipe of 5kg vanilla cake?
Last Answer : It is easy to convert your recipe to volume, ounces or grams. Since you are asking for grams I have converted a great vanilla cake recipe for you. 397g of sugar 390g of flour 1 tablespoon of baking ... convert this to grams for you. This is how I converted the recipe for you from volume to grams.
Description : What fraction of 5kg 50g?
Last Answer : It is 50/5000, which can be simplified, if required.