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What are the different types of welding?
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There are three types of projectors used for flood lighting :  a) Narrow beam Projector b) Medium angle Projector c) Wide angle Projector a) Narrow beam Projectors: - Light beam with such ... yards, stadiums, car parking area etc. 3) It is used for illuminating advertisements, boarding's etc.

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State different types of holders used in wiring installation.

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Following types of holders used in wiring installation: 1. Pendent Holder 2. Batten Holder 3. Angle holder 4. Screwed holder 

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State the purpose of lighting control. List the different types of dimmer.

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Purpose of Lighting Control:- 1. To turn ON or OFF the lamps 2. For dimming: The dimming control permits the adjustment of lighting over a range. 3. For changing the lighting levels ... operated dimmer 6) Triac operated Dimmer 7) PWM (Pulse width modulation) Controlled technique.

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State different types of electrical signal and draw all types of waveforms.

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Types of electrical signals 1) Sine wave 2) Triangular wave 3) Square wave Waveforms

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Give different types of IC.

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1. Analog IC 2. Digital IC 3. Thin and thick film ICs 4. Monolithic ICs 5. Hybrid or multichip ICs

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List different types of stepper motor. State one application of stepper motor.

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Types of stepper motor : (i)Variable - reluctance motor (ii) Permanent- magnet motors (iii) Hybrid motors. Applications of stepper motor : In robotics, In CNC machines, In computers, printers, ... In Watches, In biomedical applications such as X-ray machines, CT scan, In Process control systems. 

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different types of errors occurs in measurement.

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Generally errors are classified into three types: systematic errors, random errors and blunders. 1) Gross Errors 2) Random Errors 3) Systematic Errors Instrumental Errors Environmental ... to wrong observations or reading in the instruments particularly in case of energy meter reading. 

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List the different types of frequency meters.

Answer :

Different types of frequency meters  1. Reed type [Mechanical type] 2. Ferro-dynamic type [Resonances type] 3. Weston type 4. Ratio-meter type 5. Saturable core type 6. Digital type

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List different types of FET.

Answer :

Types of FETs:  1. Junction FET (JFET) i. N-Channel JFET ii. P-Channel JFET  2. MOSFET i. E-MOSFET ii. D-MOSFET 

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What are the four basic welding positions?

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What is undercut defect in welding?

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For arc welding current range is usually  (1) 10 to 15 A (2) 30 to 40 A (3) 50 to 100 A (4) 100 to 350 A

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For arc welding current range is usually 100 to 350 A

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Spot welding is used for (1) Thin metal (3) Castings only (2) Rough and irregular surface (4) Thick sections

Answer :

Spot welding is used for Thin metal

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Identify the correct combination of respective Electric arc welding and Electric resistance welding methods :  (A) Butt welding and Seam welding  (B) Hydrogen shielding and Projection welding  (C) Seam welding and Coated electrode welding  (D) Coated electrode welding and Hydrogen shielding

Answer :

Identify the correct combination of respective Electric arc welding and Electric resistance welding methods :  (A) Butt welding and Seam welding  (B) Hydrogen shielding and Projection welding  ... Seam welding and Coated electrode welding  (D) Coated electrode welding and Hydrogen shielding

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The electrode rod used for welding uses a coating on it 

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The electrode rod used for welding uses a coating on it  to give a vapour to serve as a shielding gas to protect the weld area from atmospheric contamination and to provide slag to protect the welded area

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The supply for arc welding is : 

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The supply for arc welding is : Low voltage, high current ac or dc voltage

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what are the three different types of Electric power?

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Real,reactive,apparent power

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Explain with sketch electron beam welding. 

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Electron Beam Welding Process In EBW process, the heat is generated when the electron beam impinges on work piece. As the high velocity electron beam strikes the surfaces to be welded, their kinetic ... material that is directly in the path is melted which when solidifies form the joint. 

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State the four advantages of MIG welding.  

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Four advantages of MIG welding: 1. High quality welds can be produced much faster. 2. Flux is not used there is no chance for the entrapment of slag in the weld metal resulting in high quality ... of metals and alloys. 5. Least expensive and highly economic. 6. Little or no post welds cleaning.

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List two special feature of welding transformer.

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Special features of welding transformer: i) It is a step down transformer that reduces the source voltage to a voltage desired according to the demands of the welding process. ii) Having large primary turns and less ... V ii) Secondary voltage - 40 to 60 V iii) Secondary current - 200 to 600 A

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Welding Defects 

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Welding Defects  Welding defects Explanation and causes 1. Cracks Cracks occur when localized stresses exceed the ultimate tensile strength of material. These stresses are developed due to shrinkage ... Too fast a travel, Bad welding technique, Too great a heat build-up.

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State the applications of TIG welding.

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The applications of TIG welding are as follows: 1. Mostly used to weld aluminum and aluminum alloys. 2. It is used to weld stainless steel, carbon base alloy, copper base alloy, nickel base alloy etc. 3. It is used to welding dissimilar metals. 4. It is mostly used in aerospace industries.

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Describe with a neat diagram, the process of any one type of electric welding. 

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Methods of electric welding :  1. Resistance welding  i Butt welding  ii Spot welding  iii Seam welding  iv Projection welding  2. Arc Welding  i Carbon arc welding  ii ... as copper, iron etc. The electric arc effectively concentrate heat on the surfaces it is desired to join.

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Compare between Resistance welding and Arc welding on any six points.

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Sr.No Parameters Resistance Welding Arc Welding 1 Type of welding Plastic/Pressure/Non-fusion welding Fusion/Non pressure welding 2 Principle of heat developed Heat ... It is suitable for mass production It is suitable for heavy job, maintenance and repair work

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Welding generator will have lap winding.

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different types of feedback amplifiers

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Types of feedback amplifiers: 1. Positive feedback amplifiers 2. Negative feedback amplifiers (i)voltage series feedback amplifiers (ii)voltage shunt feedback amplifiers (iii)current series feedback amplifiers (iv)current shunt feedback amplifiers

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What are the factors to be considered while selection of motors for different drives?

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Following Factors are considered while selecting electric drive (Motor) for particular application:  Factors to be considered for selection of Electrical Drives:  1) Nature of Supply:- Whether supply ... , load equalization 7) Cost: - Capital, Running and maintenance cost should be less.  

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What are the different sources of renewable energy?

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Solar Wind Tidal Geothermal

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What are the types of error?

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Human error or gross error, systematic error, applicational error and random error are the types of error.

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What are the five types of single phase motors used in the industry?

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What are the types of electronic communication?

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What are the types of power generation?

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What are the types of biasing?

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Biasing is classified into 2 types.The 2 types are 1) Forward biasing 2) Reverse biasing

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What are the types of power losses in inductor?

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Copper losses, Eddy current loss, and hysteresis loss are the types of power losses in inductor.

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Answer :

MOSFETs are of two types namely  1) enhancement type MOSFET  or  E-MOSFET 2) depletion type MOSFET  or  D-MOSFET

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How are nuclear reactors controlled? Explain two different methods in brief.

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Nuclear reactor is controlled using control rods: Control rods are made up of very high neutron absorbing material like boron, cadmium. By adjusting height of control rods on reactor core ... of nuclear reaction will increase. Whereas by pushing control rod towards the core it will reduce.

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If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is a sinusoid of the same frequency.

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How many types of types of relays are there?

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To protect most of the electrical equipment handling low power, the types of relays used are thermocouple, electronic and bimetallic.

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Answer :

rectifier is a device which converts AC voltage to pulsating DC voltage using one or more diode diode conducts only in unit direction that is forward bias condition practically it does not conduct ... types one is with using two diodes and Centre tap Transformer and another is bridge wave rectifier

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List the different level measurement methods. 

Answer :

Liquid Level Measurement Direct method 1. Hook type 2. Sight glass gype 3. Float type 4. Dip stick Indirect method 1. Hydraustatic pressure type 2. Electrical type a) Capacitance level indicator b) Radiation level detector c) Ultrasonic level gauge 3. Radar type

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