Recent questions tagged main

Description : List the main parts of D.C. motor

Last Answer : Main parts of D.C. motor and their functions:  Part Functions Yoke i) Provides mechanical support for poles. ii) Acts as protecting cover for machine. iii) Carries magnetic flux. ... a fixed physical position relative to the stator.  Shaft Used to transfer mechanical power 

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

Last 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 : List out main components of Diesel power station. 

Last Answer : Main components of Diesel power station: 1) Diesel Engine 2) Engine Air intake system 3) Engine Fuel System 4) Engine Exhaust system 5) Engine cooling system 6) Engine Lubricating system 7) Engine Starting system 8) Diesel Engine Generator (Alternator) 

Description : List out main components of Reactors. 

Last Answer : List the main components of Reactors:  1. Core 2. Nuclear fuel (U235) 3. Moderator 4. Control Rod 5. Reflector 6. Reactor vessel 7. Shielding  

Description : How rating of main switch and cable is selected for Industrial Installation.

Last Answer : 1. Rating of Main Switch or Fuse Rating is decided in industrial installation: Rating of main switch or fuse is based up the starting current of motor. For calculating starting current is considered 2 ... take 1.5 times the rated current or full load current. & thus cable rating is decided.

Description : The main advantage of AC over DC is:  (A) Conversion flexibility from one voltage level to other (B) AC can be easily converted into DC by using a rectifier (C) AC is easy to maintain & can be easily distributed at long distances (D) All of the above

Last Answer : Ac is easy to maintain and ac can be easily converted to dc by rectifier .There is no commutator for conversion in ac that's why ac machines are weight less and more efficiency.ac machines occupy less space than dc .

Description : The main objectives in framing tariff are:  (A) The consumers must readily understand the tariffs (B) The tariff must be equitable amongst different consumers (C) Tariffs can be modified from time to time (D) All of the above

Last Answer : The main objectives in framing tariff are:  (A) The consumers must readily understand the tariffs (B) The tariff must be equitable amongst different consumers (C) Tariffs can be modified from time to time (D) All of the above

Last Answer : In main line service as compared to urban and suburban service distance between the stops is more, maximum speed reached is high, acceleration and retardation rates are low.

Last Answer : In split phase motor main winding is of thick wire placed at the bottom of the slots.

Last Answer : Discrimination between main and back up protection is provided by the use of relays which are slow.

Last Answer : The main function of a fuse is to prevent excessive currents.

Description : What is the main disadvantage of phase advancers?

Last Answer : It cannot be used for motors below 20 H.P.

Description : What is the main purpose of electroplating?

Last Answer : Protecting  reactive  metals  from  corrosion.

Description : What is the main use of a transistor?

Last Answer : Main use of a transistor as amplifier and as switch.

Description : What are the main causes of harmonics?

Last Answer : Harmonic is a non linear load because linear load voltage deviated due to connection of some electrinie device such as converter,inverter

Description : What are the main parts of a generator?

Last Answer : the main parts of the generator are as follows yoke Armature Poles field winding Prime mover  Commutator Shaft Bearings Brushes