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.
asked
Mar 10, 2018
by
anonymous
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.
asked
Mar 10, 2018
by
anonymous
Description : Is it AC or DC electricity in the home?
Answer :
Obviously its A.C
asked
Mar 10, 2018
by
anonymous
Description : How the electricity is transmitted?
asked
Mar 10, 2018
by
anonymous
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)
asked
Mar 10, 2018
by
anonymous
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.
asked
Mar 10, 2018
by
anonymous
Description : How do we use nuclear energy to generate electricity?
Answer :
nuclear energy is produce by nuclei of atom
asked
Mar 10, 2018
by
anonymous
Answer :
No. Wood is an insulator and it doesn't free electrons to flow in it.
asked
Sep 10, 2017
by
anonymous
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.
asked
Mar 20, 2018
by
anonymous
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.
asked
Jun 29, 2019
by
anonymous
Description : What kinds of materials can not electricity pass through?
asked
Mar 14, 2018
by
anonymous
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.
asked
Mar 10, 2018
by
anonymous
Answer :
Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.
asked
Mar 20, 2018
by
anonymous
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.
asked
Jul 5, 2019
by
anonymous
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.
asked
Aug 25, 2019
by
anonymous
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.
asked
Aug 5, 2019
by
anonymous
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.
asked
Sep 29, 2018
by
anonymous
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.
asked
Sep 22, 2018
by
anonymous
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
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
asked
May 8, 2018
by
anonymous
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.
asked
May 8, 2018
by
anonymous
Answer :
Integrating instruments are those which measure the total quantity of electricity delivered in a particular time.
asked
Mar 21, 2018
by
anonymous
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.
asked
Mar 10, 2018
by
anonymous
Description : Is electricity generated in AC or DC?
Answer :
Electricity is generated in AC.
asked
Mar 10, 2018
by
anonymous
Description : How much electricity is produced by a power plant?
asked
Mar 10, 2018
by
anonymous
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.
asked
Mar 10, 2018
by
anonymous
Description : How electricity is transmitted and distributed?
asked
Mar 10, 2018
by
anonymous
Description : How electricity is distributed?
asked
Mar 10, 2018
by
anonymous
Description : How much is 1 unit of electricity?
Answer :
1 unit of electricity is equal to 1 kWh.
asked
Mar 10, 2018
by
anonymous
Description : Is electricity faster than lightning?
asked
Mar 10, 2018
by
anonymous
Answer :
To avoid electric shock from electrical appliances to the human body
asked
Sep 10, 2017
by
anonymous
Answer :
Electricity is generated at electrical power generation station.
asked
Sep 10, 2017
by
anonymous
Answer :
Rubber is a insulator it do not allow flow of current so electricity can not flow through rubber.
asked
Sep 10, 2017
by
anonymous
Description : which device converts sound to electricity ?
Answer :
Microphone converts sound to electricity.
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
asked
May 8, 2018
by
anonymous
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
asked
Apr 28, 2018
by
anonymous
Answer :
An alternator coupled to a hydraulic turbine runs at slow speed, as compared to others.
asked
Mar 20, 2018
by
anonymous
Description : Synchronous motor always runs at which speed?
Answer :
Synchronous motor always runs at synchronous speed.
asked
Mar 18, 2018
by
anonymous
Description : What is the speed of an electromagnetic wave in water?
asked
Mar 10, 2018
by
anonymous
Description : What are the speed control methods of dc motor?
Answer :
Field control of DC motor Armature control of DC motor
asked
Dec 16, 2017
by
anonymous
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.
asked
May 7, 2020
by
anonymous
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.
asked
Oct 13, 2019
by
anonymous
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.
asked
Sep 6, 2018
by
anonymous
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
asked
May 8, 2018
by
anonymous
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.
asked
May 1, 2018
by
anonymous
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
asked
May 1, 2018
by
anonymous
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
asked
Apr 29, 2018
by
anonymous
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
asked
Apr 28, 2018
by
anonymous
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
asked
Apr 28, 2018
by
anonymous
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
asked
Apr 28, 2018
by
anonymous