engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Fitter Power Transmission (Gear and Belt)
In a simple gear train, the direction of rotation of driven gear is opposite to the direction of rotation of driving gear only if________.
1
even number of idler gears are present
2
odd number of idler gears are present
3
any number of idler gears are present
4
None of these