A simple a.c. generator having a constant magnetic field is connected to a resistive load. Explain with reasons what will be the effects of doubling its speed of rotation on the following:
the generated e.m.f.

A simple a.c. generator having a constant magnetic field is connected to a resistive load. Explain with reasons what will be the effects of doubling its speed of rotation on the following: mechanical power requried to rotate the generator.

A simple a.c. generator having a constant magnetic field is connected to a resistive load. Explain with reasons what will be the effects of doubling its speed of rotation on the following: frequency of rotation.

Figure shows three different orientations of a circular coil rotating in the magnetic field between the poles of a horse shoe magnet. In which orientation during rotation with uniform angular speed) is the induced e.m.f. greatest?

In an a.c. generator, coil of N turns and area A is rotated at v revolutions per second in a uniform magnetic field B. Write the expression for e.m.f. produced.

Draw a shematric sketch of an a.c. generator describing its basic elements. State briefly its working principle. Show a plot of variation of alternating e.m.f. Versus time generated by a lopp of wire rotating in a magnetic field.

An indcutor L having resistance R and a capacitor of capacitance C are connected to an alternating soure of e.m.f. the qualtity factor of the circuit is

One conducting U tube can slide inside another as shoen in figure maintaining electric contracts between the tubes. The magnetic field B is bot to the plane of he figure. If each tube move towards the other at a constant speed V, then the e.m.f. induced in the cirucit in terms of B, l and V, where l is the width of each tube, will be:

Explain with the help of labelled diagram, the construction, working and theory of ac generator. Obtain an expression for induced e.m.f.

An a.c. generator consists of a coil of 50 turns and area 2.5 m^(2) rotating att an angular speed of 60 rad s^(-1) in a uniform magnetic field B = 0.3 T between two fixed pole pieces. The resistance of the circuit including that of coil is 500 Omega . Find What will be the orientaiton of the coil w.r.t. the magnetic field to have (a) maximum (b) zero magnetic flux ?

An a.c. generator consists of a coil of 50 turns and area 2.5 m^(2) rotating att an angular speed of 60 rad s^(-1) in a uniform magnetic field B = 0.3 T between two fixed pole pieces. The resistance of the circuit including that of coil is 500 Omega . Find the max. current drawn from the generator.