Efficiency of a transformer is equal to
A
Efficiency of transformer = (secondary coil ÷ primary coil) × 100%
B
Efficiency of transformer = (mechanical advantage ÷ velocity ratio) × 100%
C
Efficiency of a transformer = (Number of turns in the secondary coil ÷ Number of turns in the primary coil) × 100%
D
Efficiency of a transformer = (power developed in the secondary coil ÷ power supplied to the primary coil) × 100%
Verified Correct Answer: D.
Physical Principles & Numerical Solution
Efficiency of a transformer = (power developed in the secondary coil ÷ power supplied to the primary coil) × 100%
Source: Myschool Past Questions Archive (Record #41324)