Describe working of constant mesh gear box with neat sketch.

Describe working of constant mesh gear box with neat sketch.
by

1 Answer

Answer :

Working of constant mesh gear box: A simplified diagram of constant mesh box has been shown in Figure. In this gear box, all gears on the main transmission shaft are constantly connected to corresponding gears on countershaft or lay shaft. In addition, two dog clutches are provided on the main shaft. One dog clutch is between the third gear and clutch gear and another is between the first (Low) gear and second gear. Top or 4th speed gear is obtained when the left dog clutch is slided to left to mesh with clutch gear by using the gear shift lever. In this case, main shaft rotates at the same speed as that of clutch gear or engine crankshaft speed which is the maximum speed. Third gear is obtained when dog cutch (left side) meshes with third gear on main shaft. In this way by sliding the second dog clutch, second and first gears are obtained.

image

by

Related questions

Describe push rod overhead valve operating mechanism with neat sketch.

Description : Describe push rod overhead valve operating mechanism with neat sketch.

Last Answer : Push rod Overhead valve operating mechanism (OHV 4 -S engine): An overhead valve engine (OHV engine) is an engine in which the valves are placed over the cylinder head. The camshaft drive-chain ... . Overhead valve arrangement makes the engine slightly shorter than overhead camshaft.   OR  

Describe mono-shock regular swing arm suspension system with neat sketch.

Description : Describe mono-shock regular swing arm suspension system with neat sketch.

Last Answer : Mono-shock Regular swing arm : Original technology of mono-shock comes from the racing world where motor cycles compete in most extreme conditions. More advanced version of this technology is employed in these ... only one shock to adjust, and there is no worry about matching two shocks.   

Describe constructional details of single cradle frame with neat sketch.

Description : Describe constructional details of single cradle frame with neat sketch.

Last Answer : Single cradle frame :  The single cradle is the simplest type of motorcycle frame, and looks similar to the first ever motorcycle frames. It is made from steel tubes that surround the engine with a main ... found in off-road motorcycles.  Figure: Typical motor cycle frame of cradle type

Describe working of two wheeler charging system with labeled sketch

Description : Describe working of two wheeler charging system with labeled sketch

Last Answer : Working of charging system of two wheeler: The main components of two wheeler charging system are- 1.Battery 2.Regulator cum rectifier unit (Regulator and rectifier are assemble in one unit) 3. ... case of failure of fuse it disconnects the supply from regulator cum rectifier to battery.  

Explain with sketch working of electronic petrol injection system. State its advantages over carbureted fuel system.

Description : Explain with sketch working of electronic petrol injection system. State its advantages over carbureted fuel system. 

Last Answer : Working of Electronic Fuel injection system: Because mechanical injection systems have limited adjustments to develop the optimal amount of fuel into an engine that needs to operate under a variety of different ... (acceleration). 7. Compact design of fuel supply system. 8. Modular design

Describe working of capacitive discharge ignition (CDI) system

Description : Describe working of capacitive discharge ignition (CDI) system

Last Answer : Working of CDI system: It mainly consists of 6-12 V battery, ignition switch, DC to DC convertor, charging resistance, tank capacitor, Silicon Controlled Rectifier (SCR), SCR-triggering device; step ... of AC to DC charging device, signal conditioning and amplifying unit and control circuit.   

Explain with block diagram working of microprocessor controlled ignition system.

Description : Explain with block diagram working of microprocessor controlled ignition system.

Last Answer : The microprocessor controlled ignition system uses input from sensors like crankshaft position sensor, oil temperature sensor, ignition trigger coil and throttle position sensor. The ignition module/ ... the ignition module / microprocessor enables the spark to be timed accurately.  

Describe effects of frontal area exposed in motor cycle on performance of vehicle.

Description : Describe effects of frontal area exposed in motor cycle on performance of vehicle. 

Last Answer : The amount of drag an object is subjected to comes from two things; the frontal area of the Motorbike and what's called its drag co-efficient. The frontal area of motor cycle involves ... mud guard which reduce the frontal area will improve the performance reducing air resistance called air drag. 

Describe role of crash bar and saree guard in two wheeler safety.

Description : Describe role of crash bar and saree guard in two wheeler safety.

Last Answer : The role of i) Crash bar: Crash bars aim to protect motorcycle engines and body panels as well as it is used to protect the rider. It is also used as a mount point for accessories like highway ... guards will not only protect the rider, but also the cargo from being pulled into the rear wheel. 

Describe ergonomic aspects of seat arrangement of two wheeler.

Description : Describe ergonomic aspects of seat arrangement of two wheeler.

Last Answer : ergonomic aspects of seat arrangement of two wheeler: The design of the motorcycle is limited by the physical constraints of making the machine work. Comfort and ease of use, and ultimately your safety, ... spring & leather) to protect both rider & pillion rider from shocks & vibrations on road. 

Describe procedure to adjust valve clearance of four stroke engine of two wheeler with necessary sketches.

Description : Describe procedure to adjust valve clearance of four stroke engine of two wheeler with necessary sketches.

Last Answer : Procedure: 1) Remove the valve cover according to your shop manual's instructions. Don't try to hammer a screwdriver or chisel between the valve cover and the head. You will ruin the gasket surface in a ... When the clearance feels good, hold the adjusting screw, and tighten up the lock nut. 

tractors are generally fitted with: A)sliding mesh gear box B)constant mesh gear box C)both (a) & (b) D)synchromesh gear box

Description : tractors are generally fitted with: A)sliding mesh gear box B)constant mesh gear box C)both (a) & (b) D)synchromesh gear box

Last Answer : A)sliding mesh gear box

Compare constant mesh gear box with synchromesh gear box

Description : Compare constant mesh gear box with synchromesh gear box

Last Answer : Sr No. constant mesh gear box  synchromesh gear box  1. It has need of double declutching . No need of double declutching as in case of constant mesh gearbox. 2. Problem in ... noisy as helical gears are used. 4. It has more vibration. It has less vibration.

Describe the working of recirculating ball type steering gear box with sketch.

Description : Describe the working of recirculating ball type steering gear box with sketch.

Last Answer : Working of Recirculating ball type steering gear box: It consists of worm at the end of steering rod. A nut is mounted on the worm with two sets of balls in the grooves of the worm, in between ... and actual the link rod through the drop arm, resulting in the desired steering of the wheels.

Select a tyre for sports bike and justify it with illustrations.

Description : Select a tyre for sports bike and justify it with illustrations.

Last Answer : Criteria for selecting tyre for Sports bike : 1. Road Grip: It should have a very good grip of road surface on hot/ cold/ wet/ dry/ gravel road surface while travelling straight or cornering. 2. ... Tubeless Tyre (TT) Tyre pressure: front- 32 psi and rear 36 to 38 psi High sectional width  

Explain with sketches effect of steering geometry on vehicle performance.

Description : Explain with sketches effect of steering geometry on vehicle performance.

Last Answer : The performance of vehicle is affected by steering geometry as turning ability . maneuverability , stability etc. The effects are due to change in the steering geomentry parameters like trail, cater angle or ... of dropping of steering head also increases with larger rack angles

Explain with relevant justification that use of catalytic convertor reduce the tail pipe emissions.

Description : Explain with relevant justification that use of catalytic convertor reduce the tail pipe emissions.

Last Answer : The emissions from exhaust of vehicle are pollutants like Carbon monoxide (CO), Un-burnt Hydro carbon (UBHC), and oxides of nitrogen (NOx) without any after treatment device. Use of catalytic ... to carbon dioxide. In this way catalytic convertor converts more harmful gases into less harmful gases.

Select a material for a frame of 350 CC motorcycle and justify its use.

Description : Select a material for a frame of 350 CC motorcycle and justify its use.

Last Answer : The material used for heavy duty motor cycle like 350 cc motor cycle depends upon design, strength and type of frame being used. Generally, Steel is commonly used material due to reasons like joining of ... known as AISI4140 steel. The some parts are made of aluminum alloy to reduce the weight.  

“Driving habits are closely associated with drivers safety” justify this statement with illustrations.

Description : “Driving habits are closely associated with drivers safety” justify this statement with illustrations.

Last Answer : Driving habits are closely associated with drivers safety because drivers do not follow the following good driving habits accidents are likely to occur. i) Drivers habit to wear day night goggle will ... vehicle in economy mode not only ensures the fuel economy but also helps to improve safety. 

“Ergonomics plays an important role in passenger comfort” justify this statement with illustrations.

Description : “Ergonomics plays an important role in passenger comfort” justify this statement with illustrations.

Last Answer : Ergonomics plays an important role in ensuring complete comfort for the driver and the passenger, ensuring smooth journey, and maximizing experience. Ergonomics is the process of designing or arranging ... involves study of human seating posture, human body dimensions etc. During ride the vehicle  

“Indicator lamps play an important role in vehicle safety” justify this statement with suitable illustrations.

Description : “Indicator lamps play an important role in vehicle safety” justify this statement with suitable illustrations.

Last Answer : Indicator lamps are used for indicating others the intention of driver for turning the vehicle in particular direction before the actual turning is started. Without the indicator lamps it would not be ... distance and making the other drivers alert for the same. It thereby avoid the accident.  

Define: (i) Trail , (ii) Caster angle

Description : Define: (i) Trail , (ii) Caster angle

Last Answer : i) Trail: Trail refers to distance between imaginary point where the steering axis intersect the ground and the centre of tyre contact point. Measured length between the imaginary point and centre of front tyre ... in the plane of the wheel is called the caster angle. It ranges from 20 to 80. 

State functions of carburetor.

Description : State functions of carburetor.

Last Answer : The main functions of the carburettor are: 1) To keep a small reserve of fuel at a constant head. 2) To vaporize the fuel to prepare a homogeneous air fuel mixture. 3) To supply correct amount of the air fuel mixture at the correct strength under all conditions of load and speed.

State any two types of muffler with their application.

Description : State any two types of muffler with their application.

Last Answer : Applications of muffler: 1. Baffle type - Used in motor cycle. Straight baffle type muffler is used in those motor cycles who like their bikes to be loud and Quiet baffle type muffler is used in regular ... sound is produced and need to be reduce. e.g. High cc bikes like Royal Enfield etc.  

List materials used for two wheeler frame.

Description : List materials used for two wheeler frame.

Last Answer : The use of steel tubing is still common. In modern times other materials, such as titanium, aluminium, magnesium, and carbon-fibre, along with composites of these materials, are now used.

Enlist features of tubular frame.

Description : Enlist features of tubular frame.

Last Answer : Feature of tubular frame: 1) It acts as a beam supported by the wheels to carry the weight of the propelling machinery and the rider. 2) It provides a non-flexing mount for the engine suspension and wheel. 3) It provides free steering movement of the front wheel

Explain the working of Ackerman steering gear mechanism with neat sketch.

Description : Explain the working of Ackerman steering gear mechanism with neat sketch.

Last Answer : Working: The whole mechanism of Ackerman Steering gear is on the back of the front wheels. The Ackerman steering gear consists of turning pairs The slotted links AM and BH are attached ... each end. The steering is affected by moving CD to the right or left of its nominal position. 

Describe with schematic diagram working of constant mesh gearbox

Description : Describe with schematic diagram working of constant mesh gearbox

Last Answer : -In constantmesh gearbox all the gears on the mainshaft are constantly mesh with layshaft gear & freely rotate on mainshaft. -When the clutch is in engaed position & gears ... than direction of mainshaft becomes reverse & reverse gear ratio obtained which is near about 3:1

Describe with neat sketch the working of “Air Suspension”

Description : Describe with neat sketch the working of “Air Suspension”

Last Answer : Working: An air compressor takes the atmospheric air through a filter and compresses it to a pressure of about 240 MPa, at which pressure the air in the accumulator tank is maintained, which ... air gets further compressed and absorbs the shock when the wheel encounters a bump on the road. 

Describe working of Stabilizer bar with neat sketch

Description : Describe working of Stabilizer bar with neat sketch 

Last Answer : Stabilizer (Anti Roll) Bar: Working: When the wheel strikes a bump, it starts vibrating up & down, thus exerting torque on the bar, which acts as a spring. When one road wheel is ... obviate this tendency, a stabilizer is used in car suspension system. It prevents lateral swaying.  

Describe with neat sketch working of air compressor used in automobile workshops. State its two advantages

Description : Describe with neat sketch working of air compressor used in automobile workshops. State its two advantages

Last Answer : As shown in ig. Shows two stages reciprocating air compressor with water cooled and intercooler First of all fresh air is sucked from atmosphere in low pressure (L.P) cylinder during its suction ... :  1) Less power is required to drive the compressor.  2) Higher volumetric efficiency 

Describe with neat sketch the construction and working of surface condenser

Description : Describe with neat sketch the construction and working of surface condenser

Last Answer : Construction- It consists of horizontal cast iron cylindrical vessel pack with tubes, through which the cooling water flows. The ends of the condenser are cut off by vertical perforated type plates into ... ; the secondary function of condenser is to supply pure and hot feed water to boiler.  

Describe with neat sketch of working of bomb calorimeter

Description : Describe with neat sketch of working of bomb calorimeter

Last Answer : working of bomb calorimeter:   The calorimeter is made of austenitic steel which provides considerable resistant to corrosion and enables it to withstand high pressure. In the calorimeter use of a strong ... the calorimeter. From the above data the calorific value of the fuel can be found.  

Describe with neat sketch working of full floating type.

Description : Describe with neat sketch working of full floating type.

Last Answer : Fig:- full floating Rear axle Explanation: The figure shows the full floating axle. The wheel is on the axle casing. Two roller bearings are between the wheel and axle casing. ... supported by the wheel and the axle casing. Fully floating rear axle is used in heavy commercial vehicles 

Describe the working of motorcycle clutch with neat sketch.

Description : Describe the working of motorcycle clutch with neat sketch.

Last Answer : Working : While the flywheel is rotating the pressure plates rotate and press against the friction plate. This causes the friction plates and thus the clutch shaft to rotate as well. When the pedal is ... they are not fully pressed by pressure plates. Thus the shaft also stops rotation. 

Describe the working of water/liquid cooling system with neat sketch.

Description : Describe the working of water/liquid cooling system with neat sketch.

Last Answer : A water-cooled engine block and cylinder head have interconnected coolant channels running through them. At the top of the cylinder head all the channels converge to a single outlet. A pump, driven by a ... speed increases. There is no necessity of maintaining the water up to a correct level.  

Describe the working of four stroke C. I. engine with neat sketch.

Description : Describe the working of four stroke C. I. engine with neat sketch. 

Last Answer : Working principle of CI engine: 1. Suction stroke: During this stroke, inlet valve is open and exhaust valve is closed. Only air is sucked into cylinder during this stroke. The ... burnt gases outside the combustion chamber. Crankshaft rotates by two complete revolutions through 720˚. 

Describe the working of EGR valve with neat sketch.

Description : Describe the working of EGR valve with neat sketch.

Last Answer : Answer: Exhaust Gas Recirculation Valve (Operation-2 marks, Sketch-2 marks) When the engine is idling, the EGR valve is closed and there is no EGR flow into the manifold. The EGR valve remains closed ... exhaust gas (less than 10% of total) to be supplied into the incoming air: fuel mixture

Describe the construction and working of D-MPFI and L-MPFI with help of neat sketch.

Description : Describe the construction and working of D-MPFI and L-MPFI with help of neat sketch.

Last Answer : D-LMFI System: It is Manifold fuel injection system.In this type, the vacuum in the intake manifold and volume of air by its density are sensed in this type of MPFI system .As air enters into ... intake manifold , the air flow sensor measures the amount of air and sends information to ECU.

Describe the working of fuel injector with neat sketch

Description : Describe the working of fuel injector with neat sketch

Last Answer : Fuel Injector: The injector assembly consists of - i) a needle valve ii) a compression spring iii) a nozzle iv) an injector body When the fuel is supplied to lift the injection ... spring tension and hence the valve opening pressure is controlled by adjusting the screw provided at the top.

Describe the working of PN junction diode with neat sketch under forward biased condition.

Description : Describe the working of PN junction diode with neat sketch under forward biased condition.

Last Answer : If the p-region (anode) is connected to the positive terminal of the external DC source and nside (cathode) is connected to the negative terminal of the DC source then the biasing ... The large number of majority carriers crossing the junction constitutes a current called as the forward current.

Describe working of variable air gang capacitor with neat sketch.

Description : Describe working of variable air gang capacitor with neat sketch.

Last Answer : ( OR)   working: Consider the structure of the above figure. It mainly consists of two sets of aluminium plates separated from each other by air. These metal plates may be rotary or ... when the shaft is rotated. Sometimes, two or more such capacitors are operated by a single shaft.  

Describe working of screw conveyor with neat sketch.

Description : Describe working of screw conveyor with neat sketch.

Last Answer : 1. A Screw conveyor consist of a continuous or broken blade helix or screw fastened to the shaft (or a pipe) 2. This helix or screw rotates in trough so that revolving screw advances the material. 3. ... divided solids or pasty solids. 4. This conveyor can also be used as mixture or blender. 

Describe with neat sketch working of natural draft cooling towers.

Description : Describe with neat sketch working of natural draft cooling towers.

Last Answer : Natural draft cooling tower: -In natural draught cooling tower, the circulation of air is produced by the pressure difference of air inside the tower and outside atmospheric air Hot cooling water falls down ... the pressure difference of air inside and outside of cooling tower (natural flow).

With neat sketch describe working of reaction turbine.

Description : With neat sketch describe working of reaction turbine.

Last Answer : Working principle of reaction turbine- -A turbine in which steam pressure decreases gradually while expanding through the moving as well as through the fixed blade is known as reaction turbine. -In pure ... the steam to leave the moving blade as higher velocity than as which it entered.

Describe working of variator drive with neat sketch.

Description : Describe working of variator drive with neat sketch.

Last Answer : Working of Variator Drive: Vario-drive provides various drive ratios between the engine and rear wheel according to the engine speed and load. It consists of two set of split pulleys - drive and ... this occurs, the drive ratio decreases and less torque is delivered to the final reduction.

Describe working of centrifugal clutch with neat sketch.

Description : Describe working of centrifugal clutch with neat sketch.

Last Answer : Centrifugal clutch-  Working of Centrifugal Clutch: Centrifugal clutch works on the principle of centrifugal force. When the engine is started, the speed of the driving shaft is less, so the centrifugal force ... disengaged at low speed. The stop H limits the amount of centrifugal force.

Describe in brief working of Symons rain gauge with neat labelled sketch.

Description : Describe in brief working of Symons rain gauge with neat labelled sketch.

Last Answer : The most common type of non- recording rain gauges used in our country is the Symon's raingauge'.  Working: A Symons Rain gauge consists of a cylindrical vessel of 127 mm internal diameter with an enlarged ... rim which is then measured by the measuring glass in mm' and tenth of mm'

Describe the working of pick-up assembly of CD player with the help of neat sketch.

Description : Describe the working of pick-up assembly of CD player with the help of neat sketch.

Last Answer : Diagram: Explanation: The pick-up assemble consist of - * A low power laser diode to illuminate the CD tracks. * Lens and prism arrangement to direct the laser beam to the ... beam is applied to a group of photodiodes through objectives lens, collamination lens and some prism arrangement. 

Describe with neat sketch working of hysteresis motor.

Description : Describe with neat sketch working of hysteresis motor.

Last Answer : Working: When stator is energized with single phase ac supply, rotating magnetic field is produced because of starting (auxiliary) and main windings, which remain in circuit permanently. The ... the principle of magnetic locking this motor either rotates at synchronous speed or not at all.