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What is a drive in electrical controls?

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Description : What is the difference between AC and DC drive?

Answer : AC means alternating current It's Frequency is 50hz Dc means direct current ItsI Frequency is 0Hz

Description : What is an electric motor drive?

Answer : An electric drive is a complex electromechanical system that drives various actuators in industrial and industrial work machines. In this case, control is carried out using a technological process ... calculation of the kinematic and load characteristics of the electric drive is carried out.

Description : What does an electric drive do?

Description : What is the need for electrically isolated drive circuits?

Description : What are the fundamental requirements of gate drive ICs?

Description : In an adjustable speed ac drive which quantity gets reduced above rated speed ? (A) developed torque (B) stator frequency (C) reduced starting torque (D) stator current

Answer : In an adjustable speed ac drive which quantity gets reduced above rated speed ? (A) developed torque (B) stator frequency (C) reduced starting torque (D) stator current

Description : Adjustable-speed drive

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Answer : For constant torque drive armature voltage control speed control method is preferred.

Description : The synchronous motor which works on leading power factor and does not drive any mechanical load is called?

Answer : The synchronous motor which works on leading power factor and does not drive any mechanical load is called synchronous condenser.

Description : Explain transformer isolated drive circuits providing both signal and power.

Description : Can a power surge erase a hard drive?

Description : Explain MOSFET gate drive circuit and totem pole configuration.

Answer : MOSFET gate drive circuit: The turning on and turning off of MOSFET can be controlled from gate to source voltage signal. If the gate to source voltage of MOSFET exceeds threshold ... this configuration, the two switches (transistors) are used in totem pole arrangement with a comparator.

Description : Explain open emitter BJT drive circuit.

Answer : open emitter BJT drive circuit:

Description : Explain DC coupled drive circuit with unipolar output.

Answer : DC coupled drive circuit with unipolar output: The figure shows the circuit and waveforms

Description : Explain thyristor gate drive circuit.

Answer : Thyristor Gate Drive Circuit: The thyristor can be turned on by pulse voltage signal at gate terminal and it does not require continuous drive signal like the transistor. The gate ... circuit provide required minimum gate voltage and gate current then the thyristor conducts properly.

Description : basic gate drive circuit of GTO

Answer : basic gate drive circuit of GTO

Description : Scherbius Drive System

Answer : Scherbius Drive System

Description : Kramer Drive System

Answer : Kramer Drive System Kramer drive is a rotor side speed control drive of induction motor. Slip is the difference between synchronous speed and rotor speed. It is the ... and DC motor. The static Kramer drive is costlier because of the cost of DC motor.

Description : Advantages of Variable Frequency Drive (VFD)

Answer : Advantages of Variable Frequency Drive (VFD)

Description : What are the main electrical equipment used in HPS ? State the function of each parts of it in brief. 

Answer : Following Main Electrical Equipment used in HPS & their function: 1. Alternator 2. Exciter 3. Transformer 4. Switchgear   Function :  1) Alternator:- Alternator is coupled to ... part from the healthy section. It contains circuit breaker, relays, switches and other control devices.  

Description : What is a node in an electrical circuit?

Answer : a positively charged electrons

Description : What does BIL stand for in electrical terms?

Answer : BIL stands for Basic Insulation Level.

Description : What is the advantage of AC over DC electrical transmission?

Description : What is the function of an electrical filter ?

Answer : Filter separates different components that are mixed together. Electrical filter can separate different frequency components. Electrical filters are the electrical circuits which are use to remove unwanted frequency components from the signal.

Description : What is electrical circuit ?

Answer : An electric circuit is the interconnection of electrical elements. Electrical elements like battery, lamp, wire etc.

Description : What is the meaning of electrical materials?

Description : What is the electrical instrumentation?

Description : What is electrical instruments?

Description : What is the difference between linear and nonlinear electrical loads?

Description : What is the definition of an electrical system?

Description : How to replace the electrical wiring in the apartment?

Answer : How to replace the electrical wiring in the apartment? In most cases, when renovating an apartment, a complete replacement of the electrical wiring is required, especially if the house was built in ... Upon completion of the finishing, the new electrical wiring in your apartment is ready for use.

Description : Name safety tools used in industry for electrical wiring.

Answer : Safety tools used in industry for electrical wiring : 1) Hand gloves 2) Goggles 3) Rubber mats 4) Fire extinguishers 5) Danger notice plates 6) Search lights 7) Safety shoes or Gumboots 8) Ear plugs ... belts 13) Safety mask 14) Fire buckets 15) First aid box 16) Insulating stick or discharge rod

Description : State the importance of electrical power in day to day life. 

Answer : Importance of electrical power in day to day life: 1. Electrical energy is the basic necessity for domestic (residency), commercial, industrial, agriculture, consumers , transport (Electric ... agriculture products. iv) Running motors, furnaces of various kinds in industry, running locomotives 

Description : Why earthing is essential in electrical installation ? Explain any one type of earthing. 

Answer : Following reasons earthing is essential in electrical installation :   1. To provide an alternative path for the leakage current to flow towards earth. 2. To save human life from danger of electrical shock ... G.I. pipe of size 19mm and funnel for pouring the water in earth pit when required.

Description : Write short notes on fire extinguishing methods adopted in electrical engineering. 

Answer : Stand 6 to 8 feet away from the fire and follow the four-step PASS procedure. If the fire does not begin to go out immediately, leave the area at once. Always be sure ... fire causing the particles to expand chemically inhibiting combustion and expelling the oxygen thereby smothering the flames. 

Description : State the function of any two safety tools used in electrical workshop. 

Answer : 1. Circuit Testers: You need to have a voltage tester of some type for electrical work, and one that you trust is working properly 2. Electrical Tape: Every electrical tool kit should have at ... types of fire safety equipment are designed for detection. 11. Wooden ladder:- working with high level

Description : State the need of energy conservation in electrical motor.

Answer : Need of energy conservation in Electrical motors: 1. Induction motors are used as electrical drives in industrial, commercial and residential sectors. 2. Considering all industrial applications, 70% of ... system. 8. To adopt advanced technology in design and to use better quality materials.

Description : List any two types of fuels used in electrical power generation plants.

Answer : Types of fuels used in electrical power generation plants:  1) Solid fuels: Coal, Biomass: Wood, Nuclear fuel: Uranium, Plutonium  2) Liquid fuels: Diesel, Petrol  3) Gaseous Fuels: Natural gas, Producer ... 2) Wood 3) Uranium 4) Plutonium 5) Diesel 6) Petrol 7) Natural gas 8) Producer gas

Description : State the function of controlling torque in electrical measuring instrument.

Answer : Function of controlling torque  1. The function is to opposes the deflection force and increases with the increase in the deflection of the moving system, to limit its movement. 2. and brought ... set a position where the two opposing forces i.e. deflection and controlling forces are equal. 

Description : kWh meter is the electric meter that measures the amount of electrical _________ in kWh that was consumed in the house.  (A) Energy (B) Current (C) Voltage (D) None of the above

Answer : kWh meter is the electric meter that measures the amount of electrical Energy in kWh that was consumed in the house. 

Description : In fuel cell the __________ energy is converted into electrical energy.  (A) Mechanical (B) Chemical (C) Heat (D) Sound

Answer : In fuel cell the Chemical energy is converted into electrical energy. 

Description : In order to have a lower cost of electrical energy generation the load factor  (1) and the diversity factor should be low (2) should be low but the diversity factor should be high (3) should be high but the diversity factor should be low (4) and the diversity factor both should be high

Answer : In order to have a lower cost of electrical energy generation the load factor and the diversity factor both should be high

Description : The resistance of a few meters of wire conductor in closed electrical circuit is?

Answer : The resistance of a few meters of wire conductor in closed electrical circuit is practically zero.

Description : Laminated cores, in electrical machines, are used to reduce?

Answer : Laminated cores, in electrical machines, are used to reduce eddy current loss.

Description : Silicon steel is used in electrical machines because it has?

Answer : Silicon steel is used in electrical machines because it has low hysteresis loss.

Description : Why harmonics are generated in electrical system?

Description : Is it possible to apply superposition theorem to nonlinear circuit? If yes, why? and if no, why? Explain

Description : Briefly explain how an electrical generator converts mechanical energy into electrical energy.

Answer : Working principle of DC generator: * Working principle of DC generator is the principle of dynamically induced emf or electromagnetic induction. * According to this principle, when flux is cut by a conductor, an ... , the flux is cut by the armature winding and an emf is dynamically induced in it. 

Description : Explain the suitability of aluminium as an electrical conductor with respect to its mechanical and electrical properties. 

Answer : Following are requirements of conductor:- i) High conductivity :  Material should have high conductivity, So that * cross section of conductor (size) reduces, * Copper losses reduces, * So Efficiency ... . Boiling point is 1820°C 9. Specific gravity is 2.7 10. High resistance to corrosion. 

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