# Recent questions tagged electrical

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Electrical engineering

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Electrical quantities (symbol and basic unit)

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Electrical Engineering Android APP

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What is the function of an electrical filter ?

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Problems on electrical power and energy

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Problem on electrical power and energy 2

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Problem on electrical power and energy 1

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Problem on electrical power and energy 7

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Problem on electrical power and energy 6

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Problem on electrical power and energy 5

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What is electrical circuit ?

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State the need of energy conservation in electrical motor.

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Describe the following energy conservation methods of electrical motor. i) By motor survey ii) By matching loads with motor rating

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Compare industrial electrical installation and residential electrical installation.

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State any four general rules for Electrical Installation.

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Define Electrical Installation and give its classification.

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

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Explain significance and purpose of electrical measurement system.

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State the function of controlling torque in electrical measuring instrument.

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Define: (i) Resolution, (ii) Calibration, with reference to electrical measuring systems.

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Classify electrical materials.

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1.Determine the permeability of magnetic material by plotting its BH curve 2. Measure voltage, current and power in 1-phase circuit with resistive load. 3. Measure voltage, current and power in R-L series circuit. 4.Determine the transformation ratio (K) of 1-phase transformer. 5.Connect single phase transformer and measure input and output quantities. 6.Make Star and Delta connection in induction motor starters and measure the line and phase values.

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I got some grapic drawing questions guys and I need to see the answers immediately. Stator voltage curve for each four different start up methods.

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Can you guys explain the advantages of frequency converter against the star delta or soft starter?

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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

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A circuit breaker is designed to protect an electrical circuit from damage caused by :  (A) Over load (B) Short circuit (C) Over current (D) All of the above

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

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_______ electric power is the most common method used by electrical grids to transfer power.  (A) One-phase (B) Two-phase (C) Three-phase (D) None of the above

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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

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Which of the following has the lowest electrical conductivity? A) Mercury B) Silver C) Copper D) Gold

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An electrical circuit with 10 branches and 7 junctions will have

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

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

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Silicon steel is used in electrical machines because it has?

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When an alternating current passes through an ohmic resistance the electrical power converted into heat is?

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Power factor of an electrical circuit is equal to?

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What is the meaning of electrical materials?

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Explain the electrical losses of magnetic materials used for the cores of inductors and transformer.

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Explain the electrical characteristics of transformer.

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What is a node in an electrical circuit?

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Why is it cheaper to transmit electrical energy at high voltage?

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What is the electrical instrumentation?

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What is electrical instruments?

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What is a drive in electrical controls?

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What does BIL stand for in electrical terms?

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What is the difference between linear and nonlinear electrical loads?

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Why harmonics are generated in electrical system?