Internal Combustion Engines
The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in meters, N = Speed of engine in r.p.m., S = Spring balance reading in newtons, D = Dia. of brake drum in meters, and d = Dia. of rope in meters)

P = [(W - S) π (D + d) N]/60 watts
All of these
P = [(W - S) πDN]/60 watts
P = (Wl × 2πN)/60 watts

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
The tangential velocity of the water element having a free vortex is

Inversely proportional to its distance from the centre
Directly proportional to its distance from the centre
Directly proportional to its (distance)2 from the centre
Inversely proportional to its (distance)2 from the centre

ANSWER DOWNLOAD EXAMIANS APP