Science, asked by indrajeet1215, 1 year ago

A transformer is used to light a 100 W and 110 V lamp from a 220 V mains. If the main current is 0.5 amp, the efficiency of the transformer is approximately-

Answers

Answered by amansingh2788978

18

Input power = 220*0.5=110

output power = 100

efficiency of transformer =

(output power/input power) *100

= (100/110)*100

= 90.91%

Previous Question

Next Question

Similar questions

Math, 6 months ago

ABCD is a parallelogram in which AC &BD are the diagonals which bisect at point O, ∠BAC = 35⁰ and ∠CAD=40⁰& ∠COD=65⁰.Calculate ∠ABD & ∠BDC Please answer my question fast.

Computer Science, 6 months ago

Write html code to create a Admission form having the fields Name, gender, address, Class, submit button and reset button by making the use of form elements.

Computer Science, 6 months ago

3. Clean the screen of the monitors with cloth 4. A can badly affect your computer without y con ter...

Science, 1 year ago

A lift of mass 1000 Kg which is moving with acceleration of 1 ms2 in upward direction, then the tension developed in string which is connected to lift is : -...

Science, 1 year ago

A bomb of mass 30kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18kg mass is 6ms–1. The kinetic energy of the other mass is :...

Physics, 1 year ago

define momentum of a body prove that with the help of third laws that total momentum of two bodies is conserved during collision provide no external force act...

Math, 1 year ago

a cube has volume 422cm3 . calculate the side of the cube...

Math, 1 year ago

pls answer both questions...