SUMMARY
The efficiency of a transformer for a small appliance with an input of 110 V and 6.4 W, and an output of 8.9 V at 270 mA is calculated using the formula: efficiency = (power out * 100) / (power in). The output power is determined to be 2.43 W (8.9 V * 0.270 A). Therefore, the efficiency of the transformer is approximately 38.03%. This calculation assumes ideal conditions without accounting for losses such as heat generation.
PREREQUISITES
- Understanding of electrical power calculations (P = I * V)
- Familiarity with transformer specifications and operation
- Knowledge of basic electrical units (voltage, current, wattage)
- Concept of efficiency in electrical devices
NEXT STEPS
- Research the impact of transformer losses on efficiency
- Learn about different types of transformers and their applications
- Explore methods to improve transformer efficiency
- Study the principles of electrical power distribution systems
USEFUL FOR
Electrical engineering students, appliance designers, and anyone involved in the design or analysis of transformers and their efficiency.