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What speed does electricity travel at?
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Description :

How does the electricity travel?

Answer :

Electricity can only travel when there is a force pushing it. This force is called electromotive force. Take a look at  a water pump. When you on it force(EMF)will be applied to the ... its specified destination. This same process is applied to  electricity. EMF is required to start the process. 

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Description :

How does electricity get from the power plant to your home?

Answer :

Electricity  gets  into   my   home  due  to  potential  diffrence  created   between  the  live   wire  and  neutral  wire.

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Description :

Is it AC or DC electricity in the home?

Answer :

Obviously its A.C

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Description :

How the electricity is transmitted?

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Description :

How is electricity passed through a wire?

Answer :

A  wire contains  mobile  electrons  as  majority  charge  carriers  and  holes  as minority  charge carriers when  an emf  or   potential  diffrence is  provided , electrons  flow  in opposite  direction  with  holes(convection current  flow)

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129 views 3 answers
Description :

Why do you need a closed circuit for electricity to flow?

Answer :

When  the  circuit  is  closed  , a potential  diffrence  is  realized  between  the  two  nodes  connected  .This  causes  flow of  electrons  and  convection  current.

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133 views 1 answer
Description :

How do we use nuclear energy to generate electricity?

Answer :

nuclear energy is produce by nuclei of atom

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Answer :

No. Wood is an insulator and it doesn't free electrons to flow in it.

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Answer :

If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in damage to the starting winding.

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73 views 1 answer
Description :

List at least two examples that show how static electricity can be generated.

Answer :

Examples of how static electricity can be generated include combing your hair, walking across a carpeted room, or sliding two pieces of plastic across each other.

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107 views 1 answer
Description :

What kinds of materials can not electricity pass through?

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Description :

What do we use to generate electricity?

Answer :

Use wind turbines.  In a windy seashore we set up some wind turbines.  But when the place is not windy we got no electricity.

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Description :

Answer :

Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.

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166 views 1 answer
Description :

Why does the speed of a DC shunt motor decrease as the load increases?

Answer :

Because if the load is increasing then the torque must also be increase. If not then the speed of motor will decrease.

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2.6k views 1 answer
Description :

necessity of transmission of electricity.

Answer :

 Because of following points there is necessity of transmission of power:   1. Electrical load on power system is not concentrated at one place but it is widely spread.  2. Load ... to the point of actual utilization of it (consumers) for this purpose transmission electricity is necessary. 

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Description :

Describe the concept of Ferro electricity. Explain the application of Ferro electric material

Answer :

The ferroelectric material has an electric dipole moment and it is spontaneously polarized. They have high dielectric constant which is nonlinear because it is dependent on the intensity of ... used in condensers to concentrate considerable quantities of electric energy within a small space. 

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60 views 1 answer
Description :

Define the terms: i) Tariff ii) Fuel surcharge iii) Electricity Duty iv) Connected load

Answer :

i) Tariff: The rate at which a consumer is charged for the consumption of electricity is called as tariff. OR The amount of money framed by the supplier for the supply of electrical energy ... is the total wattage of all appliances which are used by the consumer on his sanctioned connection. 

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103 views 1 answer
Description :

Define the following terms related to tariff: (i) Connected load (ii) Unit consumed (iii) Fixed charges (iv) Electricity Tax 

Answer :

(i) Connected load  It is the sum of the power ratings (Watts or kW or MW) of all devices and machines existing (installed) in the premises of consumer. It is used to decide the ... a percentage of the total electricity bill which includes all amounts that go to the electricity supply agency. 

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411 views 1 answer
Description :

The consumer of electricity could be : (A) Domestic (B) Agricultural (C) Industrial and Commercial (D) All of the above 

Answer :

The consumer of electricity could be : (A) Domestic (B) Agricultural (C) Industrial and Commercial (D) All of the above 

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Description :

The Central Electricity Regulatory Commission (CERC) is mainly responsible for:  (A) Regulating tariffs for generation and inter-state transmission of energy including tariffs  (B) Advising the government on tariff policy and promoting competition  (C) Efficiency and economy in the electricity industry  (D) All of the above

Answer :

The Central Electricity Regulatory Commission (CERC) is mainly responsible for:  (A) Regulating tariffs for generation and inter-state transmission of energy including tariffs  (B) Advising the government on ... (C) Efficiency and economy in the electricity industry  (D) All of the above

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Description :

As per Electricity Act, ____________means any line which is used for carrying electricity for any purpose.  (A) Electric line (B) Transmission line (C) All of the above (D) None of the above

Answer :

As per Electricity Act, Electric line means any line which is used for carrying electricity for any purpose. 

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Description :

Answer :

Integrating instruments are those which measure the total quantity of electricity delivered in a particular time.

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Description :

How do magnets and copper wire make electricity?

Answer :

According  to  Faradays  law , a changing  magnetic  field  on  a  conductor  induses  current  in  the  conductor  through   mutual  induction.

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152 views 1 answer
Description :

Is electricity generated in AC or DC?

Answer :

Electricity   is  generated  in  AC.

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Description :

How much electricity is produced by a power plant?

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Description :

Is Aluminium a good conductor of electricity?

Answer :

Yes aluminium is a conductor and it is a good conductor of electricity. But copper have better conductivity as compare to aluminium.

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Description :

How electricity is transmitted and distributed?

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Description :

How electricity is distributed?

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Description :

How much is 1 unit of electricity?

Answer :

1 unit of electricity is equal to 1 kWh.

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Description :

Is electricity faster than lightning?

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Description :

Answer :

To avoid electric shock from electrical appliances to the human body 

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Description :

Answer :

Electricity is generated at electrical power generation station.

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2.6k views 1 answer
Description :

Answer :

Rubber is a insulator it do not allow flow of current so electricity can not flow through rubber.

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Description :

which device converts sound to electricity ?

Answer :

Microphone converts sound to electricity.

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Description :

A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be

Answer :

A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be 474 V

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324 views 1 answer
Description :

The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ (A) directly proportional to α and Φ (B) inversely proportional to α and Φ (C) directly proportional to α and inversely proportional to Φ (D) directly proportional to Φ and inversely proportional to α

Answer :

The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ directly proportional to α and inversely proportional to Φ

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131 views 1 answer
Description :

Answer :

An alternator coupled to a hydraulic turbine runs at slow speed, as compared to others.

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Description :

Synchronous motor always runs at which speed?

Answer :

Synchronous motor always runs at synchronous speed.

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74 views 1 answer
Description :

What is the speed of an electromagnetic wave in water?

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4.2k views 0 answers
Description :

What are the speed control methods of dc motor?

Answer :

Field control of DC motor Armature control of DC motor

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158 views 2 answers
Description :

Define Feed and speed in shaping machine

Answer :

1) Feed: Feed (S) is the relative movement of the work or tool in a direction perpendicular to the axis of reciprocation of the ram per double stroke. It is expressed in mm per stroke. 2) Speed: ... speed is the speed at which the metal is removed by the cutting tool in a period of one minute.

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50 views 1 answer
Description :

Speed control of the motor using TRIAC

Answer :

Speed control of the motor using TRIAC:  This basic phase triggering circuit uses the triac in series with the motor across an AC sinusoidal supply. The variable resistor, VR1 is used ... meaning that it may not trigger at the exact same point for each positive and negative half cycle.

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229 views 1 answer
Description :

Describe the following errors and their compensation: (i) Phase error (ii) Speed error

Answer :

(I) Phase error   1. In the phase error the phase difference angle between ∅ & ∅ is kept by using the shading band/ring  2. If the design and location of Shading band/ring is ... of brake magnet. By changing the position of the brake magnet speed of the rotating disc can be controlled. 

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63 views 1 answer
Description :

The number of cycles in which a high speed circuit breaker can complete its operation is  (A) 3 to 8 (B) 10 to 18 (C) 20 to 30 (D) 40 to 50

Answer :

The number of cycles in which a high speed circuit breaker can complete its operation is 3 to 8

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518 views 1 answer
Description :

The fall in speed of a dc generator due to increase in load can be corrected by  (1) cooling the armature.. (2) increasing the excitation. (3) reducing the load voltage. (4) increasing the input to the prime mover

Answer :

It   can  be  corrected  by  increasing  the  input  to  the  prime  mover.

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178 views 2 answers
Description :

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque  (1) Decreases (2) Increases (3) Remains constant (4) None of the above

Answer :

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque Increases 

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135 views 1 answer
Description :

The unit of speed regulation of a governor is :  (A) Hz (B) Hz/MW (C) Hz/MVA (D) rpm/MVAR

Answer :

The unit of speed regulation of a governor is : Hz/MW

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56 views 1 answer
Description :

The speed of a 2-pole, 3-phase stepper motor operated by 1200 pulses/min (A) 100 rpm (B) 200 rpm (C) 400 rpm (D) 800 rpm

Answer :

The speed of a 2-pole, 3-phase stepper motor operated by 1200 pulses/min 200 rpm

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132 views 1 answer
Description :

The ADC having highest conversion speed is (A) Dual-slope ADC (B) Successive approximation ADC (C) Flash ADC (D) Servo ADC

Answer :

The ADC having highest conVersion speed is Flash ADC

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78 views 1 answer
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

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87 views 1 answer
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