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Download   JNTU EEE 3-1 (2011) second Mid Online Bits in PDF Subscribe to feed through email,not to miss any updates. Download JNTU EEE 3-1 (2011) First Mid Online Bits   subject wise 1. CSO * We are not responsible of any conseqences

 an obstacle avoidng robot with 2 dc geared motors, a sharp ir sensor, nd nxp microcontroller p89v51rd2bn i m having problem in programmign de microcontroller . using keil i m making a hex file to burn the data into microprocessor . can u guys suggest me some programs code to make hex file i m having problem in tat #include #define forward 0x05; //0000 01 01 both motors in forward #define reverse 0x0a; //0000 10 10 both motors in reverse #define leftturn 0x06; //0000 01 10 left motor =backwards, //right motor=forward #define rightturn 0x09; //0000 10 01 left motor=forward //right motor=backwards #define obst P2 void main() { int P1,P2; P1=0xff; //intialize PORT1 as input(sensors) P2=0x00; //intialize PORT2 as output(motors) if(obst==0) //Check if sensor has detected an obstacle { P2=reverse; P2=rightturn; } else { P2=forward; //else go forward } this is my program i hav searched for but it is showing in keil tat header file cant be read ? why ? can u correct this

The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders point outward from a central crankshaft like the spokes on a wheel. This configuration was very commonly used in large aircraft engines before most large aircraft started using turbine engines. In a radial engine, the pistons are connected to the crankshaft with a master-and-articulating-rod assembly. One piston, the uppermost one in the animation, has a master rod with a direct attachment to the crankshaft. The remaining pistons pin their connecting rods ' attachments to rings around the edge of the master rod. Four-stroke radials always have an odd number of cylinders per row, so that a consistent every-other- piston firing order can be maintained, providing smooth operation. This is achieved by the engine taking two revolutions of the crankshaft to complete the four strokes, (intake, compression, power, exhaust), which means the firing order is 1,3,5,2,4 and back

Engine Oil and its viscosity                                                        For satisfactory lubrication of the engine the oil should possess some functional properties of which viscosity of oil is one of the most important properties, as it brings out the oil’s capacity to lubricate. Viscosity is the measure of oil’s resistance to flow. An oil’s viscosity is identified by its SAE’s (Society for Automotive Engineer’s) number. The thinner and oil, lower its number, e.g. SAE 10 W. The numerical relates to viscosity at particular temperature and the alphabet ‘W’, indicates the oil’s suitability for colder temperature. With the viscosity index improver, the viscosity increses at higher temperature and at lower temperature it does not increase significantly, thus achieving optimum viscosity at lower and higher temperature. Such oils are called multigrade oils, for instance ‘20 W40’ shows thinness at low temperature and thickness at higher temperature. However, there are other servi

Saturn's moon , Enceladus , is covered with geysers shooting plumes of water vapor, icy particles and organic compounds. Instruments aboard NASA's Cassini spacecraft detected have carbon, hydrogen, oxygen, nitrogen and various hydrocarbons in the gas plumes.                                       New data from NASA's Cassini spacecraft indicates one of Saturn's moons, Enceladus, may have a fizzy ocean capable of harboring life.                                                                           The findings could explain the vast icy plumes of water that spray into space through fissures -- known as tiger stripes -- on the moon's frozen surface. "Geophysicists expected Enceladus to be a lump of ice, cold, dead and uninteresting," lead Cassini planetary scientist Dennis Matson from NASA's Jet Propulsion Laboratory in Pasadena California said. Instead scientists have recently discovered the moon is covered with geysers shooting plumes of w

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