Farm Machinery and Power Objective Questions Answers
1. Thermal conductivity of single grain is greater than thermal conductivity of bulk grain by:
(1) 2-3 times
(2) 3-4 times
(3) 4-5 times
(4) 5-6 times
2. Rough grading is done by the following equipment:
(1) bulldozers, tractor-drawn carrier type scrapers, small scrapers etc.
(2) tractor drawn land planes or wooden floats
(3) wooden planks
(4) tractor drawn sub-soiler
3. Tractor battery should be charged when specific gravity of electrolyte falls below _________
(1) 2.22
(2) 1.22
(3) 2.0
(4) 0.8
4. In potato planter _____________ type of device is used to pick up the seed.
(1) Picker wheel
(2) Spoon wheel
(3) Cage wheel
(4) Star wheel
5. Which impurity should be doped in crystalline Silicon to form n-type semiconductor?
(1) Having holes
(2) Having same number of electrons as semiconductor
(3) Having surplus free electrons
(4) Having deficit of free electrons
6. The calorific value of biogas (dung gas) is .
(1) 10 MJ/m3
(2) 15 MJ/m3
(3) 20 MJ/m3
(4) 30 MJ/m3
7. Specific Gravity of fully charged Lead Acid Battery is:
(1) 1.700
(2) 1.560
(3) 1.420
(4) 1.280
8. Recent innovations in belt conveyor system for grain handling are except one of the following?
(1) Use of higher belt speeds (upto 4.5 m/s)
(2) Use of steeper troughing angle (upto 45°)
(3) Use of inclined belts to elevate grains, thereby eliminating the need for bucket elevators.
(4) Use of horizontal belts to elevate grains, thereby eliminating the need for bucket elevators. i
9. Specific gravity separator works on the principles of:
(a) The characteristics of grains to flow down over an inclined surface
(b) The floatation of particle due to upward movement of air
(1) Principle (a) is applicable
(2) Principle (b) is applicable
(3) Principles (a) and (b) are not applicable
(4) Principles (a) and (b) are applicable
10. Which of the following is a vertical axis type wind mill?
(1) Dutch type
(2) Sail type
(3) Savonius
(4) None of the above
11. Indicate the form of droplets which is not used in Ultra Low Volume (ULV) spraying?
(1) Fine sprays
(2) Mists
(3) Aerosol
(4) Fog
12. What is the approximate maximum theoretical efficiency of the horizontal axis type wind machines?
(1) 10.5%
(2) 59.32%
(3) 38.76%
(4) 90.01%
13. When the pipes are connected in parallel, the total loss of head is _________
(1) same as in each pipe
(2) equal to the reciprocal of the sum of loss of head in each pipe
(3) equal to the sum of the loss of head in each pipe
(4) none of the above
14. In-air oven drying method of grains, the required temperature is:
(1) 160°±5°C
(2) 150°±4°C
(3) 140°±3°C
(4) 130°±2°C
15. Tractor rear mounted cultivator used for seed bed preparation and inter row cultivation in black cotton soil is:
(1) Duck foot cultivator
(2) Buck foot cultivator
(3) Suck foot cultivator
(4) Bullock foot cultivator
16. If magnitudes of x1, x2 and x3, have return periods of 50, 75 and 100 years respectively. Which of the following statement is true?
(1) x1< x2< x3
(2) x1> x2>x3
(3) x1< x2 and x2>x3
(4) x1>x2 and x2<x3
17. In carburettor engine thermal efficiency varies between:
(1) 45 to 52 per cent
(2) 38 to 45 per cent
(3) 32 to 38 per cent
(4) 25 to 32 per cent
18. The oil pressure in the hydraulic pump of hydraulic system of tractor is:
(1) 301 to 350 kg/cm2
(2) 251 to 300 kg/cm2
(3) 201 to 250 kg/cm2
(4) 150 to 200 kg/cm2
19. Drag devices are often capable of generating high torques and are ideal for some uses such as ___________.
(1) Water pumping
(2) Electricity generation
(3) Both (1) and (2)
(4) None of the above
20. Among following which one should be followed for the tractor after every 10 working hours?
(1) Under dusty conditions, air cleaner oil is changed.
(2) Engine oil should be changed
(3) Transmission oil should be changed
(4) Tappet clearance should be examined and checked
More Questions on Agriculture Engineering
21. A transformer having 1000 primary turns is connected to 250 V a.c. supply. For a secondary voltage of 400 V, what will be number of turns in secondary coil?
(1) 1000
(2) 500
(3) 1600
(4) 3200
22. It is required to fill the tank of compression sprayer to ___________ of its capacity.
(1) ½
(2) ¾
(3) 2/3
(4) 4/5
23. The average field capacity of tractor mounted sugarcane planter is about _________
(1) 0.2
(2) 0.5
(3) 1
(4) 0.8
24. The capacity of a screw conveyor is influenced by:
(a) Screw diameter
(b) Inclination of the screw
(c) Speed of blade
(d) Shaft diameter
(1) (a), (b) are only correct
(2) (a), (b), (c) and (d) are correct
(3) only (c) is correct
(4) (c), (d) are only correct
25. Oscillating type of hydraulic jump takes place when Froude number is in the range of:
(1) 2.5 to 4.5
(2) 1.5 to 2.5
(3) 4.5 to 5.5
(4) 5.5 to 7.5
26. In rheology except one of the following parameters are used for expressing the mechanical behavior of the material?
(1) Force
(2) Deformation
(3) Time
(4) Porosity
27. Which of the following is not a basic element of a transformer?
(1) Core
(2) Secondary winding
(3) Primary winding
(4) Mutual flux
28. For conveying grains on a belt conveyor, recommended speed of its belt is:
(1) 2.5-2.8m/s
(2) 3-3.5m/s
(3) 4-4.5 m/s
(4) 0.5-1m/s
29. In terms of power output one can expect how much kW per animal?
(1) 0.3 to 0.6
(2) 0.7 to 1.0
(3) 1.1 to 14
(4) 15 to 1.8
30. What is the standard value of the solar constant __________ .
(1) 1000 W/m2
(2) 2000 W/m2
(3) 1353 W/m2
(4) 1857 W/m2
31. In essential tests under tractor testing there are number of tests except one among following?
(1) Engine test
(2) Drawbar test
(3) Centre of gravity
(4) Noise measurement
32. Road speed of farm tractor for transport work is:
(1) 19 to 24 kmph
(2) 25 to 30 kmph
(3) 31 to 36 kmph
(4) 37 to 42kmph
33. The practical unit of electrical energy is ___________.
(1) Joules-second
(2) Watt-second
(3) Kilowatt-hour
(4) Watt-hour
34. The equipment used for land grading is:
(1) M.B. Plough
(2) Disc Plough
(3) Buck Scraper
(4) Cultivator
35. Which one of the following is not a principal part of a Sprayer Nozzle?
(1) Body
(2) Washer
(3) Disk
(4) Single or double acting pump
36. For efficient photo-voltaic cell, it is desirable to have high values of:
(1) Fill factor
(2) Short circuit current
(3) Open circuit voltage
(4) All of the above
37. In diesel engine, the torque is considerably high at lower than rated speed this behavior is called _____________.
(1) rising ability
(2) gearing ability
(3) lugging ability
(4) traction ability
38. To increase the spray angle of nozzle spray pattern, it is required:
(a) to increase orifice diameter
(b) to increase pressure
(c) to reduce opening of swirl plate
(1) (a) and (b) are correct only
(2) (a), (b) and (c) all are correct
(3) (b) and (c) are correct only
(4) (a), (b) and (c) are incorrect
39. The power duster of a small capacity does not consist of one of the following:
(1) Blower
(2) High speed Engine
(3) Discharge Hose pipe
(4) Hand Automizer
40. Dryer used to remove water from solutions or suspensions is:
(1) Solar dryer
(2) Rotary dryer
(3) Spray dryer
(4) Batch dryer
41. _________ is the amount of forward travel per cut by the rotary tiller.
(1) Byte length
(2) Cut length
(3) Bite length
(4) Effective length
42. Air cleaner used in Farm engines is:
(1) Oil bath type
(2) Hit and miss type
(3) Pre-cleaner type
(4) Swimming type a
43. Under single cropping pattern, it is normally recommended to consider ___________ HP for every two hectares.
(1) 2
(2) 2.5
(3) 3
(4) 1
44. A tillage implement (or tool) moving at a constant velocity is subjected to following main forces except one which must be in equilibrium?
(1) Force of gravity acting upon the implement.
(2) The soil forces acting upon the implement .
(3) The forces acting between the implement and the prime mover.
(4) Forces of wind velocity acting upon the implement.
45. Draft of a plough is measured in:
(1) Keg
(2) kg/Sq.cm
(3) Sq.cm
(4) Hectares
46. Which one of the following does not affect the draft of plough?
(1) Tillage treatments
(2) Manures applied
(3) Crop residue left in the soil
(4) Spraying to previous crop
47. A property of agricultural product which is necessary to design air separating system is:
(1) Hydrodynamic properties
(2) Aerodynamic properties
(3) Physical properties
(4) Thermal properties
48. Roller milling system of wheat is divided into break roll system and __________.
(1) Reduction roll system
(2) Single roll system
(3) Double roll system
(4) Rubber roll system
49. Modern rice milling machinery is developed in Europe and in ;
(1) India
(2) China
(3) USA
(4) Japan
50. In carburettor, the choke controls the volume of __________ entering into the venturi.
(1) Petrol
(2) mixture of air and petrol
(3) diesel
(4) air
