Mention various energy losses in a transformer.

Name any two types of energy losses in a transformer. State how any one of them can be minimized.

What are four different types of energy losses in a transformer? State how to reduce/minimize any one of them.

(i) with the help of a labelled diagram, describe briefly the underlying principle and working of a stepup transformer. (ii) Write any two sources of energy loss in a transformer. (iii) A step-up transformed converts a low input voltage into a high output voltage. Does it violate law of conservation of energy ? Explain.

(a) When the primary of a transformer is connected to a 120 V AC mains the current in the primary is 18.5 mA. Find the voltage across the secondary when it delivers 1.5 mA current through it, assuming the transformer to be an ideal one. State any one type of energy loss in a transformer. (b) A rectangular coil of sides .I. and .b. carrying a current lis subjected to a uniform magnetic field vecB acting perpendicular to its plane. Obtain the expression for the torque acting on it.

Draw a schematic arrangement for winding of primary and secondary coil in a transformer when the two coils are wound on top of each other. (ii) State the underlying principle of a transformer and obtain the expression for the ratio of secondary to primary voltage in terms of the (a) number of secondary and primary windings and (b) primary and secondary currents. (iii) Write the main assumption involved in deriving the above relations. (iv) Write any two reasons due to which energy losses may occur in actul transformers.

Mention various levels of biodiversity.

The transformation ratio in the step -up transformer is

What are the various energy transformations that occur when you are riding a bicycle ?

What are neuroregulators? Mention various types of them with examples.

Mention various steps in the process of digestion in human.