Question { HD, 8389 }

what is the difference between bearing and crushing mode of
failure in respect to machine design?

Answer

bearing stress is related to all circumferential area x length
whr as crushing strees is related to projected area

Question { 6057 }

Why is Air Conditioner capacity measured in ton like
1.5ton?

Answer

1 ton of refrigeration is 3.15kw/s heat absorbing capacity refer amt of refrigeration effect produce by melting of 1 ton ice maintaining at 0 degc in 24 hrs

Question { Kirloskar, 15749 }

What is the shaft coupling and its types.

Answer

shaft coupling is used to connect shaft with primary drive or to extend it's length
it has two category rigid and flexible
muff coupling ,flange coupling , odhams coupling universal cuoplinf , are of diffrent types

Question { Hero Honda, 9650 }

what is the peripheral velocity of two mating gears?

Answer

peripheral velocity of driver and driven gears are same as calculated: ∏ x diameter of driver gear x speed od driver (rpm) = ∏ x diameter of driven gear x speed of driven gear
use to calculate velocity ratio

Question { 6533 }

defination of octane no & cetane no

Answer

Term associate with fuel:
Patrol:
octane no is to refer capability to resist knocking in patrol engine means highest octane no in patrol good for engine usually in india octane no is 85/90

Diesel:
cetane no: is to refer capability to resist detonating in Diesel engine higher the cetane no higher the resisiting capability

both are the properties of fuel in i.c. engine

Question { 6221 }

HOW MANY vA=1kv?

Answer

1000VA = 1KVA