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  INTRODUCTION                                        Root cause analysis (RCA) is a method of problem solving used for identifying the root causes of faults or problems.[1] A factor is considered a root cause if removal thereof from the problem‐fault‐sequence prevents the final undesirable event from recurring; whereas a causal factor is one that affects an event's outcome, but is not a root cause. Though removing a causal factor can benefit an outcome, it does not prevent its recurrence within certainty. For example, imagine an investigation into a machine that stopped because it overloaded and the fuse blew.[2] Investigation shows that the machine overloaded because it had a bearing that wasn't being sufficiently lubricated. The investigation proceeds further and finds that the automati...

Service Management Concept INTRODUCTION                 Service management in the manufacturing context, is integrated into supply chain management as the intersection between the actual sales and the customer. The aim of high performance service management is to optimize the service‐intensive supply chains, which are usually more complex than the typical finished‐goods supply chain. Most service‐intensive supply chains require larger inventories and tighter integration with field service and third parties. They also must accommodate inconsistent and uncertain demand by establishing more advanced information and product flows. Moreover, all processes must be coordinated across numerous service locations with large numbers of parts and multiple levels in the supply chain. Among typical manufacturers, post‐sale services (maintenance, repair and parts) account for less than 20 percent of revenue. But among the m...

Form factor of mother board Motherboard Form Factors MicroATX  The microATX form factor was developed as a natural evolution of the ATX form factor to address new market trends and PC technologies. While offering the same benefits of the ATX form factor specification, the microATX form factor improves upon the previous specification in several key areas. Current trends in the industry indicate that users require a lower‐cost solution for their PC needs. Without sacrificing the benefits of ATX, this form factor addresses the cost requirement by reducing the size of the motherboard. The smaller motherboard is made possible by reducing the number of I/O slots supported on the board. The overall effect of these size changes reduces the costs associated with the entire system design. The expected effect of these reductions is to lower the total system cost to the end user. <p Through careful designing of a microATX motherboard, an OEM can capitalize on the benefits of a reduction in ...

હેતુ.: Replacing/upgrading Processor તાલીમ માટે જરૂરી  સાધનો /  computer  system . કાચો માલ સામાન :- Power Supply 230 volts . As we have seen RAM module replace them and upgrade them  yet now discuss on Processor module for speed propose નિર્દશન દરમીયાન  અનુસરવાનાં ક્રમીક પદો Turn off your PC and remove the power cable  Unscrew your computer's case and remove the cover.  Identify your motherboard, your current processor chip, your RAM memory cards, and your video card Find out what kind socket your motherboard has  If your current motherboard does support the new processor you want, buy the new processor at a computer hardware store of your choice and skip to    Socket 370: Intel Pentium III, Celeron  Socket 462 (socket A): AMD Athlon, Duron, Athlon XP, Athlon XP‐M, Athlon MP, Choose a motherboard that satisfies your criteria (which may depend on cost, technical specifications, or compatibility with your old hardware)...

 

 

 

 

 1. What is the current through the Zener diode with full load condition? Zero  Minimum  Maximum  Remains constant  2. Which component filter the ripples in the rectifier circuit? DIAC  Diode  TRIAC  Capacitor  3. Which parameter is maintained constant in Zener diode? Power Current  Voltage  Resistance  4. When does the Zener diode begins to conduct in the reverse biased condition? When bias voltage reached 0.7 V  After the barrier voltage cancelled  Voltage across Zener reached 0.3 V Voltage across it reached the Zener voltage   5. What is the current through the zener diode under no load condition? Zero  Minimum  Maximum  Remains constant  6. Which is used for to operate in the reverse breakdown region? Diode  Capacitor  Zener diode  Resistor   7. What is the meaning of first letter indicated in the ...

 1. What is the meaning of maximum safe reverse voltage across a diode? PIV voltage  Knee voltage  Break down voltage  Reverse break down voltage  > 2. What is the peak inverse voltage of germanium diode? 0.3 V 0.7 V 0.8 V 1 V 3. Which is the first step followed in troubleshooting of electronic circuit?  Thermal test  Chemical test Mechanical test  Physical and Sensory test 4. Which diode is used in low power communication circuits? Signal diodes Rectifier diodes  Switching diodes  High power diodes 5. What is the process of adding impurities to a pure semiconductor material? Doping Etching  Forming Diffusion  6. Which impurity is added to form P - type semiconductor material?  Arsenic Gallium  Antimony Phosphorus 7. Which impurity is added to pure semiconductor to form ‘N-type’ material? Boron  Indium  Arsenic  Gallium 8. What is the name of the process of converting AC into DC vol...

      પ્રશ્ન 1  નવી CBT EXAM પધ્ધતિ માં શુ છે ?  👉 *પેપર: 1 ( બધાજ વિષયો)   👉 સમય: 2 કલાક 👉 કુલ પ્રશ્નોની સંખ્યા: 75 👉 કુલ માર્કસ:* 150  પ્રશ્ન 2 એન્જીનીયરીંગ ટ્રેંડમાં વિષય મુજબ પ્રશ્નો અને માર્કીંગ સ્કીમ કઇ રીતે રહેશે?  👉      ટ્રેડ થીયરી:                                          38 પ્રશ્નો,           76 માર્કસ            વર્કશોપ કેલકયુલેશન સાયન્સ:       6 પ્રશ્નો,             12 માર્કસ              એન્જીનિયરીંગ ડ્રોઇંગ:                     6પ્રશ્નો,                12 માર્કસ             એમ્પલોયેબિલિટી સ...

Function of mother board Introduction The motherboard is a sheet of plastic that holds all the circuitry to connect the various components of a computer system. Learn how the motherboard functions to make all the other components work together. Definition                 A motherboard is one of the most essential parts of a computer system. It holds together many of the crucial components of a computer, including the central processing unit (CPU), memory and connectors for input and output devices. The base of a motherboard consists of a very firm sheet of non‐conductive material, typically some sort of rigid plastic. Thin layers of copper or aluminum foil, referred to as traces, are printed onto this sheet. These traces are very narrow and form the circuits between the various components. In addition to circuits, a motherboard contains a number of sockets and slots to connect the other components. Major Motherboard Components CPU (Ce...

Precautions for SMPS Precautions for SMPS General Safety Guidelines when working on line powered equipment including: TVs, monitors, and microwave ovens. These guidelines are to protect you from potentially deadly electrical shock hazards as well as the equipment from accidental damage. Note that the danger to you is not only in your body providing a conducting path, particularly through your heart. Any involuntary muscle contractions caused by a shock, while perhaps harmless in themselves, may cause collateral damage   ‐ there are many sharp edges inside this type of equipment as well as other electrically live parts you may contact accidentally. The purpose of this set of guidelines is not to frighten you but rather to make you aware of the appropriate precautions. Repair of TVs, monitors, microwave ovens, and other consumer and industrial equipment can be both rewarding and economical. Just be sure that it is also safe! Don't work alone ‐ in the event of an emergency ano...

 AIM :- IDENTIFY THE TYPES OF OUTPUT CONNECTORS OF SMPS SMPS or PSU is the component that supplies power to your major computer components. the different types of connectors or cables of an SMPS that supply power to various computer components and devices. .   20 + 4 Pin ATX / Motherboard Connector   This is the main ATX connector that supplies power to your motherboard and other components like RAM, Low-end graphics card, PCI cards that are connected to your motherboard. Earlier motherboards have 20 pin sockets only but now modern-day motherboards require 24-pin power connectors. Therefore nowadays all the SMPS comes with 24 pin detachable connector (20 + 4) that can be split into 20 pin and 4 pin cables.   CPU 4 + 4 Pin Connector   This is the 12 Volt connector that supplies power to your CPU or Processor. Some motherboards have 4 pins 12V CPU socket and some have 8 pins 12V socket, therefore most of the good power supplies come with 8-pin (4...

  What is SMPS (Switch-Mode Power Supply)? The full name of SMPS is Switch-Mode Power Supply. SMPS is defined in simple language when the need for electricity comes in the form of a switch. In which electrical energy is converted from one form to another with essential properties called SMPS. This power is used to obtain a regulatory DC input voltage from DC output or uncontrollable AC for power. SMPS is just as complex as any other power supply system. This is a power source used for loading. SMPS is an important device for a wide variety of electrical and electronic devices. Which provides it with a source of power consumption specifically designed for electronic projects?   Working Principle of SMPS (Switch Mode Power Supply): The working principle of switch-mode power supply topologies is as follows: 1. AC-DC Converter SMPS Working: In this type of SMPS, the input supply is AC and in the output, we get DC supply. Rectifiers and filters are used to convert thi...