Question 160Electricity & Electronics - 1st Asst/Chief
70% to passA 440/110 V single phase transformer supplies a load of 5 kW at 0.8 power factor load. What will be its secondary current ignoring transformer power losses?
A11.36 A
B14.2 A
C45.45 A
D56.82 A
AI Explanation
The correct answer is D) 56.82 A. To calculate the secondary current of the transformer, we need to use the formula: I = P / (V * cos(θ)), where I is the current, P is the power, V is the voltage, and cos(θ) is the power factor. Given: - Power (P) = 5 kW = 5,000 W - Voltage (V) = 110 V (secondary) - Power factor = 0.8 Plugging these values into the formula, we get: I = 5,000 W / (110 V * 0.8) I = 56.82 A The other options are incorrect because they do not correctly apply the formula to calculate the secondary current of the transformer.
Related Questions
Q139:The conversion of the throttle command voltage to the signal necessary to achiev...
Q185:As shown in figure "A" of the illustration, if in troubleshooting the control ci...
Q184:As shown in the illustration, what mechanism will disconnect the motor from the ...
Q25:As shown in figure "B" of the illustration, when the DC motor in figure "A" is o...
Q249:What should be performed as routine maintenance of lead acid batteries?
Ready to test your knowledge?
Take a Electricity & Electronics - 1st Asst/Chief Practice ExamOfficial Resources
Pass Your Coast Guard Licensing Exams!
Study offline, track your progress, and simulate real exams with the Coast Guard Exams app