SK ENGINEERS

  DIFFERENCE BETWEEN SQUIRREL CAGE INDUCTION MOTOR & SLIP RING INDUCTION MOTOR Sr. No. COMPARATIVE POINTS SQUIRREL CAGE INDUCTION MOTOR SLIP RING INDUCTION MOTOR 1. CONSTRUCTION More simple and robust construction. Less simple construction. 2. COST Cheaper Costlier 3. STARTING The motor requires 1.       Star delta stater. 2.       Stator resistance starter. 3.       Auto-transformer starter. The motor requires 1.       Rotor resistance starter. 4. STARTING TORQUE Low starting torque. High starting torque. 5. PULL OUT TORQUE greater lesser 6. EFFICIENCY More efficiency Less efficiency ...

  LUBRICATION SYSTEM IN I.C. ENGINES Ø   INTRODUCTION : ·         Lubrication of moving parts by means of oil, grease etc. is essential for proper functioning and to reduce friction between the moving parts of automobiles. Ø   PURPOSE AND FUNCTIONS OF LUBRICATION : ·         To make the moving parts function properly by reducing friction. ·         By reducing friction wear of moving parts will be minimized. ·         Lubricating oil will take up the shocks/vibrations by small extent. ·         Corrosion of parts will be prevented. ·         To reduce noise. ·         Because of lubricating oil film between piston rings and cylinder walls, it does not allow any leakage of gases across the rings. Ø   PROPERT...

  SENSORS AND TRANSDUCERS Ø   SENSORS : ·         A sensor is defined as an element which when subjected to some physical change experiences a relative change. ·         Devices which respond directly to any physical phenomenon such as force, temperature, heat, light etc. are called sensors. ·         The sensor produces a proportional output signal mechanical, electrical or magnetic when exposed to physical phenomenon. Ø   CLASSIFICATION OF SENSORS : ·         Sensors can be classified into various groups according to the factors such as measurand, application field, conversion principle, energy domain of the measurand and thermodynamic considerations. ·         Detail classification of sensors in view of their applications in manufacturing is as follows. A.      ...