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Why instead of transmitting maximum power power utility transmits power at maximum efficiency?
This question relates to the economic decisions that electricity utilities make in designing their power networks. During peak load periods, power is transmitted at the maximum current that is safe for the network, but at other times power transmission simply depends on demand.
Ideally, utilities would transmit power at maximum efficiency because, by minimising losses over the lines and in Transformers, they minimise generation costs. However, each increase in efficiency results in increased capital costs. A compromise is always made between purchasing efficient power transformers and distribution transformers or less expensive ones with higher losses.
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When is the efficiency maximum in a transformer?
the efficiency is maximum in a transformer when no load loss is equal to load loss.
What is the condition for maximum efficiency of a DC machine?
The condition for maximum efficiency of a d.c. machine is that VARIABLE LOSSES must be equal to CONSTANT LOSSES i.e., variable losses = constant losses..
When a source is delivering maximum power to load the efficiency of the circuit is always?
50%
What are the disadvantages of helical antenna?
Efficiency drops with added turns. Maximum efficiency is about 80% with a 3-4 turn helical and drops to about 60% at 12 turns.
What determines the power rating of a machine?
generally rating means the condition when the machine can give maximum efficiency without being overheated .In transformers and generators it is decided by core as well as copper loss(flux proportional to supply voltage,current proportional to copper loss).so both are rated in kVA whereas motors are rated as maximum output they can deliver i.e kW.
When is the efficiency maximum in a transformer?
the efficiency is maximum in a transformer when no load loss is equal to load loss.
Why instead of transmitting maximum power power utility transmit power at maximum efficiency?
This question relates to the economic decisions that electricity utilities make in designing their power networks. During peak load periods, power is transmitted at the maximum current that is safe for the network, but at other times power transmission simply depends on demand. Ideally, utilities would transmit power at maximum efficiency because, by minimising losses over the lines and in Transformers, they minimise generation costs. However, each increase in efficiency results in increased capital costs. A compromise is always made between purchasing efficient power transformers and distribution transformers or less expensive ones with higher losses.
Why are distribution transformers frequently designed to develop maximum efficiency at loads that are somewhat lower than rated value?
It is always desirable to run any equipment or device at maximum efficiency for that matter, not only the power transformer. Power transformer maximum efficiency occurs when copper loss is equal to iron loss. (or no load loss equals to load loss). This does not necessariliy mean that maximum efficiency occurs at maximum or full load. Generally the maximum efficiency occurs at relatively less than full load of the transformer.
When is efficiency of 3phased Induction motor maximum what is the condtion for maximum efficiency in induction motor?
It is maximum at about 75% to 100% of the motor rated load. Efficiency is maximum at unity power factor , when R=X and when variable losses Is equal to constant losses at rated load.
What is maximum efficiency condition in distribution transformer?
The maximum efficiency condition in distribution transformer is said to be occurred when iron loss = copper loss
What is the formula of efficiency?
Efficiency is typically calculated as the ratio of actual output to maximum possible output, expressed as a percentage. The formula for efficiency is: Efficiency = (Actual output / Maximum possible output) * 100%.
What is maximum efficiency of stirling engine?
78%
Which power plant has maximum efficiency?
thermal
What is the maximum power efficiency of an AM modulator?
50%
What is the optimal nm concentration for achieving maximum efficiency in the experiment?
The optimal concentration of nm for achieving maximum efficiency in the experiment is 10 nanomolar (nm).
What is the maximum speed called that transmits data between two nodes on network node?
node speed
What is the efficiency of the Otto cycle formula and how can it be optimized for maximum efficiency?
The efficiency of the Otto cycle is given by the formula: Efficiency 1 - (1 / compression ratio)(-1), where is the specific heat ratio. To optimize the efficiency of the Otto cycle for maximum efficiency, you can increase the compression ratio, improve combustion efficiency, reduce heat losses, and use higher octane fuel.
