where we use 1 phase & 3 phase supply ?what is major advantage using 3 phase over than single phase ?3 4194
i need 24v dc from 230v ac supply how we can getit ? what are the devices &its rating requied for that ? plzz i need answer urgently .thank u3 7188
what could be the RMS value and average value of a 4 phase sine wave?
What is the operating range(tolerance) of voltage and frequency of grid supply in india?
whenever any squirrel or a crow falls on the transformer input line then there is a big explosion and 440 volts of power is being discharged through the neutral line due to which appliances in off mode are also burned.we have earthing for the transformer as well as the bus bar chamber.why is it happening?1 1483
Can we use HRC Fuse inplace of Semiconductor fuse?1 4731
What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?1064
While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?2566
a.)Ammeter and Voltmeter read rms value or avg. value ? b.)What are symmetrical and Unsymmetrical faults?2 5075
How we can design a cable for a 3phase load.3 5270
What is a copper loss or i2r loss pc?
draw vector diagram and +ve,zero sequence diagram of symmetrical three phase fault.
What is the Current equation in series RLC circuits.
why in the three pin plug all 3 pins are cutted ?
How to protect sensitive loads such as Dosing pumps inside a factory from voltage surge/voltage fluctuation.
How to decide and select the different earthing wire size for the different types of earthing
What is T’Q and X’Q and X’D ? and what is saturated as well as unsaturated ?
What are unstable systems?
What is meant by reverse polarity and how it can be fixed?
Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?
What are the different towers used in 132kv transmission line? what are the differences between the P,R,S towers used in 132KV and detailed explanation
Explain how you intend to work under pressure to meet up with deadline target?
what is the purpose of high speed earth switch in gas insulated substat
how much flux density of CRNO core
Why induction motor is widely used in industry