What is an electric motor drive?

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asked Mar 10, 2018 by anonymous

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asked Mar 10, 2018 by anonymous

What does an electric drive do?

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asked Dec 16, 2017 by anonymous

What is the use of an electric motor?

Last answer: Electrical motors are use for converting electrical energy to mechanical energy. It may be use in fans, pumps, washing machine, cranes, trains, factories, industries etc.

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72 views 1 answer

asked Dec 16, 2017 by anonymous

How does an electric motor works?

Last answer: In the electric motor there are two types of part 1)moving and 2)stationary In stationary part containing field winding whis use to provide uniform maganetic field it at inner side of yoke In moving ... on it and this force is from all direction we can say it is torque.and motor armature rotates

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asked Mar 18, 2018 by anonymous

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

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

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asked Mar 10, 2018 by anonymous

What is the difference between AC and DC drive?

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

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asked Mar 10, 2018 by anonymous

What is a drive in electrical controls?

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asked Mar 18, 2018 by anonymous

An electric motor in which both stator field and rotor rotates with same speed is called?

Last answer: An electric motor in which both stator field and rotor rotates with same speed is called synchronous motor.

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asked Mar 20, 2018 by anonymous

The power mentioned on the name plate of an electric motor indicates?

Last answer: The power mentioned on the name plate of an electric motor indicates the output power available at the shaft.

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79 views 1 answer

asked May 1, 2018 by anonymous

The motor used for electric traction is

The motor used for electric traction is (1) D.C. shunt motor (3) D.C. series motor (2) D.C. compound motor (4) Synchronous motor

Last answer: The motor used for electric traction is D.C. series motor

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asked Mar 20, 2018 by anonymous

The electric motor used in portable drills is?

Last answer: The electric motor used in portable drills is universal motor.

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asked Sep 18, 2018 by anonymous

Describe the reason of using dc series motor for electric trains.

Last answer: Electric trains require an inverse torque speed characteristics for proper operation. That is a higher torque is required at start (when speed is nil or low) and as the train picks up ... torque - speed characteristics of DC series motors match, these motors are suitable for electric trains

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115 views 1 answer

asked Apr 28, 2018 by anonymous

In an adjustable speed ac drive which quantity gets reduced above rated speed ?

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

Last 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

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78 views 1 answer

asked Mar 11, 2018 by anonymous

What is the need for electrically isolated drive circuits?

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asked Mar 11, 2018 by anonymous

What are the fundamental requirements of gate drive ICs?

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asked Mar 20, 2018 by anonymous

For constant torque drive which speed control method is preferred ?

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

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asked Jul 6, 2019 by anonymous

Adjustable-speed drive

Last answer: .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

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asked Mar 11, 2018 by anonymous

Explain transformer isolated drive circuits providing both signal and power.

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asked Mar 10, 2018 by anonymous

Can a power surge erase a hard drive?

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asked Feb 19, 2018 by anonymous

Explain MOSFET gate drive circuit and totem pole configuration.

Last 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.

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asked Feb 19, 2018 by anonymous

Explain open emitter BJT drive circuit.

Last answer: open emitter BJT drive circuit:

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asked Feb 19, 2018 by anonymous

Explain DC coupled drive circuit with unipolar output.

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

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asked Feb 19, 2018 by anonymous

Explain thyristor gate drive circuit.

Last 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.

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asked Nov 14, 2017 by anonymous

basic gate drive circuit of GTO

Last answer: basic gate drive circuit of GTO

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asked Aug 25, 2017 by anonymous

Scherbius Drive System

Last answer: Scherbius Drive System

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176 views 1 answer

asked Aug 25, 2017 by anonymous

Kramer Drive System

Last 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.

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asked Aug 9, 2017 by anonymous

Advantages of Variable Frequency Drive (VFD)

Last answer: Advantages of Variable Frequency Drive (VFD)

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asked Mar 14, 2018 by anonymous

What is the direction of flow of electric current in an electric circuit?

Last answer: It flows from anode to cathode (direction of holes flow)

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asked Mar 10, 2018 by anonymous

What does an electric meter measure?

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asked Apr 29, 2018 by anonymous

The ability of materials to become polarized under an applied electric field is called _______

The ability of materials to become polarized under an applied electric field is called _______ A) Ferroelectricity B) Paraelectricity C) Polectricity D) None of these

Last answer: The ability of materials to become polarized under an applied electric field is called Paraelectricity

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96 views 1 answer

asked Apr 28, 2018 by anonymous

Specific energy consumption of an electric train is the ratio between

Specific energy consumption of an electric train is the ratio between (A) Specific energy output at driving wheels and efficiency of the traction motor (B) Specific energy output at driving wheels and efficiency of the transmission gear (C) Specific energy output of driving motor and efficiency of the driving wheels (D) Specific energy output at driving wheels and efficiency of the (motor + transmission gear)

Last answer: Specific energy consumption of an electric train is the ratio between Specific energy output at driving wheels and efficiency of the (motor + transmission gear)

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asked Mar 25, 2018 by anonymous

The filament of an electric bulb is made of?

Last answer: The filament of an electric bulb is made of tungsten.

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asked Mar 25, 2018 by anonymous

An instrument which detects electric current is known as?

Last answer: An instrument which detects electric current is known as galvanometer.

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asked Mar 21, 2018 by anonymous

Which is an instrument which measures insulation resistance of an electric circuit relative to earth and one another?

Last answer: Meggar is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another.

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231 views 1 answer

asked Mar 20, 2018 by anonymous

D.C. motor is to a drive a load which is almost nil for certain part of the load cycle...

D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select the?

Last answer: D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select the compound motor.

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75 views 1 answer

asked Mar 20, 2018 by anonymous

D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value...

D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the?

Last answer: D.C. motor is to drive a load which has certain minimum value for most of the time and some peak value for short duration. We will select the series motor.

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asked Jun 29, 2019 by anonymous

List three important characteristics of an electric circuit.

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asked May 8, 2018 by anonymous

An _____________is a network of electrical components used to supply, transfer and use electric power:

An _____________is a network of electrical components used to supply, transfer and use electric power: (A) Electric power system (B) Electric power (C) All of the above (D) None of the above

Last answer: An Electric power system is a network of electrical components used to supply, transfer and use electric power.

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asked Mar 10, 2018 by anonymous

How can a magnetic field be used to generate an electric current?

Last answer: Magnetic field can be used to generate electric current on a condition that it is on a rate of changing magnetic flux. (Faraday's law)

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89 views 1 answer

asked Aug 14, 2019 by anonymous

What is mean by electric network?

Last answer: Any electric network may be defined as a combination of a number of electric elements.

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asked Jun 28, 2019 by anonymous

What is the unit of electric current?

A) Watt B) Volts C) Farad D) Ampere

Last answer: Correct answer: D) Ampere

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2.5k views 1 answer

asked Jun 28, 2019 by anonymous

What is the unit of electric power?

Options: A) WATT B) AMPERE C) VOLTS D) OHM

Last answer: Correct Answer: A) WATT

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61 views 1 answer

asked Mar 14, 2018 by anonymous

What is the direction of the induced electric field?

Last answer: It is in opposite direction to the one that produced it.

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46 views 1 answer

asked Mar 14, 2018 by anonymous

What is the direction of the electric field?

Last answer: Electric field is at right angle widh flow of current (right hand rule).

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100 views 1 answer

asked Dec 16, 2017 by anonymous

What is electric power generation transmission and distribution?

Last answer: Generation: it wrong word at here.because it is no generation it is conversion of one form of energy into electrical form.it may by using any type of energy. Transmission is just to ... place to other by providing some modifications And distribution means use of this energy for any purpose.

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124 views 1 answer

asked Dec 4, 2017 by anonymous

what are the three different types of Electric power?

Last answer: Real,reactive,apparent power

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113 views 2 answers

asked Mar 18, 2018 by anonymous

what will happen when excitation of an unloaded salient pole synchronous motor suddenly gets disconnected?

Last answer: When excitation of an unloaded salient pole synchronous motor suddenly gets disconnected the motor will stop.

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279 views 1 answer

asked May 8, 2018 by anonymous

kWh meter is the electric meter that measures the amount of electrical _________ in kWh that

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

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

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61 views 1 answer

asked Apr 29, 2018 by anonymous

The storage battery generally used in electric power stations is

The storage battery generally used in electric power stations is (1) zinc carbon battery (2) lead acid battery (3) nickel cadmium battery (4) lithium -ion battery

Last answer: The storage battery generally used in electric power stations is lead acid battery

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91 views 1 answer

asked Apr 29, 2018 by anonymous

Which of the following is the name given to the lines of electric force which move so that its beginning traces

Which of the following is the name given to the lines of electric force which move so that its beginning traces a closed curve on a positive surface and its end traces a corresponding closed curve on the negative surface? A) Tube of surface B) Tube of lines C) Tube of force D) Tube of electricity

Last answer: Which of the following is the name given to the lines of electric force which move so that its beginning traces a closed curve on a positive surface and its end traces a corresponding closed curve on the negative ... A) Tube of surface B) Tube of lines C) Tube of force D) Tube of electricity

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asked Apr 28, 2018 by anonymous

In electric traction for a trapezoidal speed-time curve, the time period is

In electric traction for a trapezoidal speed-time curve, the time period is (A) free running speed period = constant speed period (B) free running period = coasting period (C) free running period + coasting period = constant speed period (D) average speed period = scheduled speed period

Last answer: In electric traction for a trapezoidal speed-time curve, the time period is free running period + coasting period = constant speed period

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271 views 1 answer

What is an electric motor drive?

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