TS EAMCET 5 May 2018 Shift 2 Solved Paper

The expression for the induced emf between rim and axle of wheel is given by,
e=

1

2

BωR2
Substitute the values.

π

3000

=

1

2

×0.5×10−4×ω×12
ω=

2×π

3000×0.5×10−4

=

2π×10000×2

3000

The rotation frequency in rounds per minute is calculated as,
Rotation frequency =

10000×2

3000

×60
=400‌rpm