railway RRB JE (CBT I + CBT II) Mock Test 2024 Construction Materials and Management Engineering Economy and Equipments
Physical life of an equipment is defined as
1
age at which the equipment is worn out and it can no longer reliably produce
2
the life over which the equipment can earn a profit
3
time period that maximizes the profit over the equipment life
4
age at which depreciation cost exceeds the purchase cost