HQ Technology

 What is called electronics? What are the types of electronics components and what are they? What do you mean by doping? Write its requirements?   What is called electronics? What are the types of electronics components and what are they? Answer: The branch of engineering which deals with the flow of current through vacuum tubes, gas tubes, semiconductors etc. is called electronics. Semi-conductor is called? Answer : Definition of Semi-conductor : A Semiconductor is a substance which has (10+ to 0.552m) in between conductors and e.g germanium. silicon, carbon etc. That is, all materials that have four electrons in the outer most orbit are called Semi conductors.   Religion or characteristics of Semi conductor: resistivity insulators (i) Semi-conductor resistivity conductor 3 middle of Insulator. (ii) Semi-conductor negative temperature co-efficient. of resistance is there. (iii) Semiconductor with suitable material in which current flows through the missile. (iv) At 0°k ...

 What is called electronics? What are the types of electronics components and what are they? What do you mean by doping? Write its requirements? What is called electronics? What are the types of electronics components and what are they? Answer: The branch of engineering which deals with the flow of current through vacuum tubes, gas tubes, semiconductors etc. is called electronics. Semi-conductor is called? Answer : Definition of Semi-conductor : A Semiconductor is a substance which has (10+ to 0.552m) in between conductors and e.g germanium. silicon, carbon etc. That is, all materials that have four electrons in the outer most orbit are called Semi conductors.  Religion or characteristics of Semi conductor: resistivity insulators (i) Semi-conductor resistivity conductor 3 middle of Insulator. (ii) Semi-conductor negative temperature co-efficient. of resistance is there. (iii) Semiconductor with suitable material in which current flows through the missile. (iv) At 0°k it behav...

What is called electronics? What are the types of electronics components? What do you mean by valence electron, free electron and covalent bonds? What is called electronics? What are the types of electronics components? bionsl Answer: The branch of engineering which deals with the flow of current through vacuum tubes, gas tubes, semiconductors etc. is called electronics. Electronics components are of two types. Namely : 1) Active component (transistor, FET) 2) Passive component (Resistor, capacitor, inductor) What is Semiconductor called? Write its religion. Answer : Definition of Semi-conductor : A Semiconductor is a substance which has (10+ to 0.552m) in between conductors and e.g germanium. silicon, carbon etc. That is, all materials that have four in the outer most orbit are called Semi conductors. At zero degrees Kelvin they act like insulators but when the temperature is increased current flows through them.   Religion or characteristics of Semi conductor: resistivity insul...

What is called electronics? What are the types of electronics components? What do you mean by valence electron, free electron and covalent bonds?   What is called electronics? What are the types of electronics components? bionsl Answer: The branch of engineering which deals with the flow of current through vacuum tubes, gas tubes, semiconductors etc. is called electronics. Electronics components are of two types. Namely : 1) Active component (transistor, FET) 2) Passive component (Resistor, capacitor, inductor) What is Semiconductor called? Write its religion. Answer : Definition of Semi-conductor : A Semiconductor is a substance which has (10+ to 0.552m) in between conductors and e.g germanium. silicon, carbon etc. That is, all materials that have four in the outer most orbit are called Semi conductors. At zero degrees Kelvin they act like insulators but when the temperature is increased current flows through them. Religion or characteristics of Semi conductor: resistivity insul...

 What is sub station ? Write the gravity of the sub station. Write the names of different types of substation. Or mention different substation types.     What are the considerations in choosing a lighting arrester? 1. Line voltage 2. frequency. 3. Reciprocity 4. It should be made in such a way that it does not suffer any damage to discharge the surge voltage. 5. It can earth the heavy voltage or surge very easily when needed but does not allow any power loss under normal conditions. What are the devices used for protection in very high voltage system? 1. Earthing screen. 2. Overhead ground wire. 3. Lighting arresters or surge diverters. 4. Surge Observer.     What are the advantages and disadvantages of SF6 circuit breaker Answer: Advantages: 1. Arcing time is reduced due to improved arcing extinguishing power of SFg gas. 2. It is also useful for high current. 3. Operation time does not accumulate. 4. No carbon deposits. 5. Repair costs are low. Disadvantages ...

 What is sub station ? Write the gravity of the sub station. Write the names of different types of substation. Or mention different substation types. What are the considerations in choosing a lighting arrester? 1. Line voltage 2. frequency. 3. Reciprocity 4. It should be made in such a way that it does not suffer any damage to discharge the surge voltage. 5. It can earth the heavy voltage or surge very easily when needed but does not allow any power loss under normal conditions. What are the devices used for protection in very high voltage system? 1. Earthing screen. 2. Overhead ground wire. 3. Lighting arresters or surge diverters. 4. Surge Observer. What are the advantages and disadvantages of SF6 circuit breaker Answer: Advantages: 1. Arcing time is reduced due to improved arcing extinguishing power of SFg gas. 2. It is also useful for high current. 3. Operation time does not accumulate. 4. No carbon deposits. 5. Repair costs are low. Disadvantages : 1. SF% This breaker is exp...

Insulator. What are the insulators used in over head lines? What is switchgear? Why is busbar sectionalized? How many types of system loss in electrical systems and what are they?       Insulator. What are the insulators used in over head lines? Answer: Insulators are: 1) Pin type insulator 2) Suspension type insulator. 3) Strain type insulator. 4) Shackle type insulator. 5) Post type insulator. 6) Stay or guy type insulators.   2. Why are insulators used in overhead lines?  Write the important properties of insulators. Answer: No leakage current can go from the support to the earth because of the use of insulators. That is why insulators play an important role in transmission and distribution lines.   3. What qualities should the insulator have? Answer: An insulator should have the following qualities 1. Should be mechanically strong and robust. 2. High electrical resistance should be achieved. 3. Relative permittivity should be high. 4. The ratio of punc...

Insulator. What are the insulators used in over head lines? What is switchgear? Why is busbar sectionalized? How many types of system loss in electrical systems and what are they? Insulator. What are the insulators used in over head lines? Answer: Insulators are: 1) Pin type insulator 2) Suspension type insulator. 3) Strain type insulator. 4) Shackle type insulator. 5) Post type insulator. 6) Stay or guy type insulators. 2. Why are insulators used in overhead lines?  Write the important properties of insulators. Answer: No leakage current can go from the support to the earth because of the use of insulators. That is why insulators play an important role in transmission and distribution lines. 3. What qualities should the insulator have? Answer: An insulator should have the following qualities 1. Should be mechanically strong and robust. 2. High electrical resistance should be achieved. 3. Relative permittivity should be high. 4. The ratio of puncture strength and spark over voltag...

 What is Corona? How is corona organized? What are the factors influencing corona? What is the effect of corona?   What is Corona? Ans: When the spacing of two conductors is kept greater than the diameter, they are gradually increased by applying AC voltage across them. Then at a certain stage the air on the four sides of the conductor is ionized and the insulation trace of the air is broken. In this condition, light dull violet rays appear in and around the conductor, hissing sound and the formation of weight gas is called corona. How is corona organized? is done Answer: When ac supply is applied across two conductors i.e. ac supply is gradually increased, there comes a stage when the air around the conductor gets ionized and the insulation strength of the air breaks. The result is a hissing sound around the conductor and a purple glow discharge is seen. This results in the formation of weight gases.   Ways to reduce the corona effect. Answer: Corona effect can be reduc...

 What is Corona? How is corona organized? What are the factors influencing corona? What is the effect of corona? What is Corona? Ans: When the spacing of two conductors is kept greater than the diameter, they are gradually increased by applying AC voltage across them. Then at a certain stage the air on the four sides of the conductor is ionized and the insulation trace of the air is broken. In this condition, light dull violet rays appear in and around the conductor, hissing sound and the formation of weight gas is called corona. How is corona organized? is done Answer: When ac supply is applied across two conductors i.e. ac supply is gradually increased, there comes a stage when the air around the conductor gets ionized and the insulation strength of the air breaks. The result is a hissing sound around the conductor and a purple glow discharge is seen. This results in the formation of weight gases. Ways to reduce the corona effect. Answer: Corona effect can be reduced in the foll...

Describe the types of transport lines:         Describe the types of transmission lines: Transmission lines are divided into three categories on the basis of length and operating voltage i) Short length transmission lines:- When the length of a transmission line is below 80km and the transmission voltage is below 20 kv, it is called a short length transmission line.ii) Medium Transmission Line: When the length of the transmission line is between 80 – 200km and the transmission voltage is between 20 – 100 kv, it is called medium transmission line. iii) Long transmission line: When the length of transmission line is above 200 km and the transmission voltage is above 100 kv, it is called long transmission line. Why is transposition of transport lines? Answer: Due to transposition, the average inductance capacitance of each line is equal. Show the resulting voltage regulation and transport efficiency diagram. is relatively advanced.   What is the Ferranti effect? A...