Technical gyaan

What is IP Enclosure Ratings and standard in Electrical Motor   *. IP ratings defined as Ingress protection or international protection ratings        ( BS EN 60529 : 1992) *. This standard used to define level of sealing        effectiveness  of electrical enclosure against     dust, dirt, moisture, water etc * What is two digit in IP ratings.  It is consist of letter IP followed by two digit. Higher the number better the protection if number is replaced by X it means it is not rated for that specification     * IP65   =  First Digit – Solids       The first  digit of IP indicates the level of protection that the  enclosure  provides  against the  ingress of solid foreign objects, from tools or fingers that could be  hazardous if they came into  contact with electrical conductors or moving  parts, to airborne dirt and dust that could damage c...

CGD work Area :-  1. Feasibility Study  2. Network planning and designing 3. Project management  4. CGD operations and management 5. Safety and operation of CNG and PNG 6. CGD pipeline Network  7. Study of PE distribution Network  8. CGD and CNG installations  Regulations of pipeline and CGD & complience 9. Field level Technician, plumber, fitter, compressor operator.  10. CGD businesses competition and                     Technology LNG Re-Gas Infrastructure :- Existing capacity of regasification infa in India is almost - 39.5 MMTPA including in ore and mundra terminal. Only Dahej terminal of petro LNG and Hazira Terminal of shell is operating in high capacity utilisation.  LNG Value chain :- Gas field and  -         LNG           -     Cryogenic  -   Extraction          ...

  Metal required for making induction motor :- 1. Silicon steel metal sheet -     Silicone steel is used for making rotor and             stator of induction motor. Many sheet                   connected together to make rotor and stator       to reduce eddy current loss. 2. Mild Steel -       Induction motor shaft is made up of mild              steel. 3. Copper -       Winding Rod or wire of induction motor is              made up of copper it is very good conductor         of electricity. 4. Cast Iron -       Outer Body or casing of motor is made from          cast Iron. 

  Pressure Conversion Formulae :- 1 Bar   = 10^5 Pascal 1 Bar   = 14.500 Psi 1 Bar.  =  1.0193 Kg/cm^2 1 Psi   =   0.0690 Bar 1 Kg/cm^2 = 0.9810 Bar 1 Psi.  =  6.8966 kpa 1 kg/cm^2 = 14.225 psi 1psi.  = 0.0703 kg/cm^2 

  BY - ER DHEERENDRA                                         SINGH GOUR   Units and Terminology :- Various units are used in gas measurement   some of these are given below   MMSCM    -   Million Metric standard cubic meter MMSCMD  -  Million Metric standard cubic                          meter per Day BSCM       -     Billion standard cubic meter MMT.        -     Million Metric Tonne (LNG) MMTPA .  -     Million Metric Tonne per                                  Annum MMBTU.  -     Million Metric British Tonne                  ...

  By - Er Dheerendra Singh                     Gour CGD City gas Distribution :- City gas distribution is a distribution of gas through pipe line to domestic and industrial sectors. In this system PNG and CNG sold to many segment via pipeline laying and other equipments. Natural gas is generally used in CGD distribution Pipe  used in CGD distribution are  1. Steel Pipe  2. MDPE Pipe  3. GI Pipe 4. Copper tube Natural Gas :- Natural gas is clean and odour less gas it is consist of mainly Methane, Ethane, Propane, Butane, O2, N2, H2S, CO2 and others Natural gas production started in India in 1980s. ONGC was producing oil and gas which comes as associated gas as energy Gail setup pipeline infrastructure in 1980s to transport gas - HVJ ( Hazira - Vijay agar - jagdishpur) West to North. Decision to import gas in the form of LNG (Liquified Natural Gas) was taken by Petronet LNG setup by Gail by 50 % stake and 50...

  Process of manufacturing of peb st eel structures   1. Designing   2. Materials planning  3. Sheet Metal Cutting  4. Fabrication   5. Welding   6. Finishing  7. Painting  8. Dispatch  9. Erection 

  Six Sigma :-   Six sigma is a tool and techniques used for quality improvement, problem solving.  In simple word it can be defined as improvement methodology for  manufacturing process as well as administrative and service.       Six sigma is generally focus on minimising or educing defect and obtain a  perfect product and services.  What does six sigma actually mean:- Six sigma named after a statistical concept where process only produce 3.4 defect per million opportunities dpmo Thus six Sigma also thought of a goal where process not only encounter less defect but also consistently ( low variabilityility).            DPMO :- different levels in six sigma according to the Defect per million opportunities  How six sigma works...?  Six sigma main function is to improve the quality of output of a process by identifying and removing the cause of defect and minimising variability in manufacturing and ...

  What is Traction Motor :- Traction motor is a electric device used for locomotive wheel prolulsion. Traction motor is powered by providing electricity (current) and it generate torque to rotate wheel of locomotive Trains.

 Motor Testing Instruments:- Many instruments are used for Electrical motor testing dome of these are - 1. Multimeter : A multimeter is a electronic device used for measurement of several function in one unit. It is multitester device also called VOM Volt-ohm-milliammeter. Multimeter can measure voltage, current, and resistance.  Magger :- Magger is electronic device used for measurement of insulation Resistance of motor. It is used to measure electrical leakage of current.  Kelvin meter ( double bridge resistance meter) :- It is used to measure winding resistance.  We connect one terminal of kelvin meter in U1 and other to U2 and record value in milliohm. Then connect V1 by one terminal and V2 by other and again record value. Same process repeated with third terminal. Tan Delta :  Tan delta is a electronic device used for measurement of dielectric strength and capacitance of electrical motor  Tong Tester :- Tong tester or clamp meter generally used for cur...

Large Electrical motor consist of many part these are: Stator :  Stator is main part of induction motor made up assembly of many silicon steel sheel. Silicon steel sheet are used to removed eddy current loss. Winding coil is mounted on it  It is static part of induction part.    Rotor : Rotor is rotating part of  Induction motor it is also made up assembly of many silicon steel sheet. Some rotor are wounded by copper rod and short circuit by end ring.  Radiator : Radiator are generally used in water cooled induction motor. To reduce motor from over heat two radiators are assembled in motor and connected with permanent water supply.  Blower : Blower is used to blow air for cooling of motor. Blower generally used in air cooled motor differ from water cooled. One side of motor connected with blower and another side is connected with silencer to reduce noise of air blower.  Copper Rod /coil : Copper rod and coil is very important part of motor used fo...