Description : Volumetric efficiency is affected by (A) Turbulence velocity and temperature of intake manifold (B) Efficiency of exhaust stroke (C) Valve timing overlap (D) All the above
Last Answer : (D) All the above
Description : A 40 kW engine has a mechanical efficiency of 80 %. If the frictional power is assumed to be constant with load, what is the approximate value of the mechanical efficiency at 50 % of the rated load? (a) 45% (b) 55 % (c) 65% (d) 75%
Last Answer : Ans :c
Description : Brass is an alloy of copper and zinc having the relative percentage (A) 60-70% Cu and 30-40% Zn (B) 50-60% Cu and 40-50% Zn (C) 40-50 % Cu and 60-50% Zn (D) 30-40 % Cu and 60-70% Zn
Last Answer : A) 60-70% Cu and 30-40% Zn
Description : Increase amount of non-grain material on the straw walker _______ the walker losses a) Decreases b) Increases c) Unaffected d) Equal
Last Answer : b) Increase
Description : 349- Pods, heads or ears & freeseeds, lost during the cutting & conveying operation are called as..... (a) Cylinder loss (b) Walker losses ( rack loss) (c) Shoe losses (d) Gathering loss
Last Answer : (d) Gathering loss
Description : A 10,000-watt motor operates an elevator weighing 5000 newtons. Assuming no frictional losses, how high is the elevator raised in 10 seconds. Is it raised: w) 2 meters x) 20 meters y) 50 meters z) 100 meters
Last Answer : ANSWER: X -- 20 METERS
Description : High carbon steel having carbon content about (A) 0.25 % (B) 0.25 – 0.50 % (C) 0.50 – 1.5 % (D) 2.5 - 4.5 %
Last Answer : (C) 0.50 – 1.5 %
Description : Medium Carbon steel was carbon content about (A) 0.25 % (B) 0.25 – 0.50 % (C) 0.50 – 1.5 % (D) 2.5 – 4.5 %
Last Answer : (B) 0.25 – 0.50 %
Description : Carbon content in the cast iron is (A) 2.5 – 4.5 % (B) 0 – 0.25 % (C) 0.25 – 0.50 % (D) 0.50 – 1.5 %
Last Answer : (B) 0 – 0.25 %
Description : Superchargers are driven by A. Electric current from the battery B. Exhaust gases from engine C. Direct connection with the engine power D. None of the above
Last Answer : C. Direct connection with the engine power
Description : Turbo chargers are driven by A. Direct connection with engine power B. Exhaust gases from engine C. Electric current from the battery D. None of the above
Last Answer : B. Exhaust gases from engine
Description : When frequency of occurrence of overload is less and magnitude of overload is also less than safety device used is a) Safety jump clutch b) Shear device c) Frictional device d) V-belt drive
Last Answer : a) Safety jump clutch
Description : When frequency of occurrence of overload is less but the mangnitude of overload is large than safety device used is: a) Safety jump clutch b) Shear device c) Frictional device d) V-belt drive
Last Answer : b) Shear device
Description : Soil acceleration increases draft because of a) Increased normal load on soil working surface b) Increased frictional resistance c) Kinetic energy imparted to the soil d) All of the above
Last Answer : d) All of the above
Description : Scouring will occur as long as a) Frictional resistance at soil tool interface is less than the resistance at parallel soil-soil inter face b) Frictional resistance at soil tool interface is more than ... c) Soil-metal friction is more than angle of soil shearing resistance d) None of the above
Last Answer : a) Frictional resistance at soil tool interface is less than the resistance at parallel soil-soil inter face
Description : Turbo chargers or super chargers increases engine power by A. 10-20% C. 50-60% B. 20-30% D. 90-100%
Last Answer : A. 10-20%
Description : Size of MB plow is determined by (a) depth of cut (b) width of cut (c) number of accessories (d) none of the above
Last Answer : (b) width of cut
Description : In electronic fuel injection, there is improvement in the _____________ efficiency due to comparatively less resistance in the intake manifolds which will cause less pressure losses. a) mechanical b) volumetric c) overall d) none of the mentioned
Last Answer : Answer: b Explanation: In electronic fuel injection, there is improvement only in the volumetric efficiency due to comparatively less resistance in the intake manifolds which will cause less pressure losses and no other efficiencies are hindered.
Description : Increasing non grain feed rate increase (a) Cylinder losses (b) Seed damage (c) Both (a) and(b) (d) None of the above
Last Answer : (a) Cylinder losses
Description : .Increase the grain/non grain ratio on the shoe tends to the shoe losses (a) Decreases (b) Increases (c) Decrease or increase (d) Equal
Last Answer : (d) Equal
Description : Increase in grain/non grain ratio on the straw Walker losses (a) Decrease (b) Increases (c) Unltered (d) None of the above
Last Answer : (b) Increases
Description : Increasing non-grain feed rate increase a) Cylinder losses b) seed damage c)Both (a) and (b) d) none of the above
Last Answer : a) Cylinder losses
Description : Increasing the grain/non-grain ratio on shoe tends to _________ the shoe losses a) Decrease b) Increase c)Decrease or increase d) Equal
Last Answer : c)Decreas
Description : Increase in grain/non-grain ratio on the straw walker, _____the straw walker losses a) Decrease b) Increase c)Unaltered d) None of the above
Description : Good design of the casing of a centrifugal pump aims at minimising the (A) Cavitation (B) Frictional losses (C) Kinetic energy loss (D) Static head
Last Answer : Option C
Description : Juice extraction capacity of vertical three roller type bullock down sugercane crusher E. 50-70% F. 70-90% G. 90-100% H. 30-50%
Last Answer : E. 50-70%
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 : Improved uniformity is obtained if seed tube is inclined rear ward at _________ with vertical. a)5-15° b)15-30° c)30-40° d)40-50
Last Answer : b)15-30°
Description : .total grain loss in a combine increase with a. increase in forward speed b. decrease in stubble Hight c. increase in concave clearance d. all of the above
Last Answer : .total grain loss in a combine increase with a. increase in forward speed b. decrease in stubble Hight c. increase in concave clearance d. all of the above
Description : In electrostatic spraying the total volume of liquid to be sprayed over one Hectare is a.100 litres
Last Answer : a.
Description : The heat exhaust of an automobile with an internal combustion engine represents approximately what percent of the energy of the original fuel? w) 10 % x) 50 % y) 35 % z) 5 %
Last Answer : ANSWER: Y -- 35 %
Description : The efficiency of a pumping set, is generally assumed (A) 50 % (B) 55 % (C) 60 % (D) 65 %
Last Answer : (D) 65 %
Description : The mechanical cleaning of sugar cane is done due to A. The different in the peripheral velocity of rollers B. Rough surface provided Or the outer surface of rollers C. Blow of air which forces the extraneous material out of the machine D. All of the above
Last Answer : D. All of the above
Description : In standard disc plow the tilk angel varies between: A.30-40 ° B.40-45° C.20-25° D.2-3°
Last Answer : C.20-25°
Description : Agitator(propeller or paddle)type for agitating liquid in power sprays have a velocity of a.100-120 rpm b.60-100 rpm c.10-20 rpm d. none of the above
Last Answer : a.100-120 rpm
Description : power spray are operated at a pressure. a. 5-10 kg/m2 b.10-20 kg/m2 c.20-55 kg/m2 d.>55 kg/m2
Last Answer : c.20-55 kg/m2
Description : Operating pressure of power operated sprayer E. 1-7 kg/cm2 F. 10-20 kg/cm2+ G. 20-55 kg/cm2 H. >55 kg/cm2
Last Answer : G. 20-55 kg/cm2
Description : In India post-harvest losses of fruit and vegetable is… per cent of the total production. a) 15-20 b) 50-50 c) 40-45 d) 25-30
Last Answer : a) 15-20
Description : Cylinder loss in a stationary power thresher can be reduced by increasing the : M. Cylinder peCylinder loss in a stationary power thresher can be reduced by increasing the : M. Cylinder peripheral speed N. Concave clearance O. Blower speed P. All of the above
Last Answer : M. Cylinder peripheral speed
Description : Weight per unit of drawbar power is generally ranges between a)50-120kg/kw b)120-150kg/kw c)150-250kg/kw d)250-300kg/kw
Last Answer : a)50-120kg/kw
Description : Speed of power operated machine chaff cutter is E. 35 rpm F. 50 rpm G. 600-1000 rpm H. None of the above
Last Answer : G. 600-1000 rpm
Description : In four stroke engine which of the following is also known as power stroke a. Suction stroke b. Compression stroke c. Expansion stroke d. Exhaust stroke (Ans:c) Measurements of fuel and air ... into IC engine,___________its efficiency A. increase B. decrease C. does not alter D. unpredictable on
Last Answer : ANSWER : B
Description : subsoilers are operated at maximum depth of: A.30-40cm B.45-75cm C.75-90cm D.10-20cm
Last Answer : B.45-75cm
Description : Total force exerted upon the implement by a power unit called a)pull. B) draft C)side draft. D)unit draft
Last Answer : a)pull
Description : pecific energy requirement of rotary tillers can be reduce by a) Increasing the bite length b) Decreasing depth to diameter ratio c) Both (a) and (b) d) Excessive reduction in total power requirement
Last Answer : c) Both (a) and (b)
Description : Hand operated sprayer are operated at a pressure (kg/cm2) a) 1-7 b) 7-10 c)10-20 d) 20-55
Last Answer : a) 1-7
Description : Application rates for dusters are a.40 kg/ha
Description : .The number of knives on powered chaff cutter a) 2-6 b) 1-2 c) 5-10 d) 10-20
Last Answer : a) 2-6
Description : Operating pressure of the hand operated sprayer is E. 20-55 kg/cm2 F. 1-7 kg/cm2 G. 10-20 kg/cm2 H. >55 kg/cm2
Last Answer : F. 1-7 kg/cm2
Description : Length of cut for silage ranges from E. 2-4 cm F. 5-10 cm G. 15-20 cm H. 20-25 cm
Last Answer : E. 2-4 cm