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For overhead protection we use which transformer?
An active element is one which a. Supplies energy b. Absorbs energy c. Supplies energy and convert energy from one form to another
The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input
In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans
Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above
ROC converges if poles and zeros lie inside a. Origion b. Z=1
best manufacturer for busbar for outdoor switchyard having double bus bar scheme, can any one share technical specification of busbar. 132kv voltage ?
How to calculate concret slab? W l t(4mts*5*2fts) ratio m25 grade pls tell me procedure
I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.
Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.
How to calculate the size of earth cable to earth the neutral of UPS ?
Why neutral cable carry current.
Whats the standard thickness of 20'/30' wide rcc service road and what will be the estimated cost per cubit feet
area control error
