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Power & machines quiz
Five questions on Power & machines. Answer all 5 to see your score. Questions are drawn from a bank of 15, so every attempt is different.
Question 1 of 5
An ideal transformer with 500 primary turns and 50 secondary turns converts 230 V to:
Question 2 of 5
In an ideal transformer, stepping voltage down by 10 makes the available secondary current:
Question 3 of 5
Transformers do not work with steady DC because:
Question 4 of 5
Raising transmission voltage tenfold for the same power reduces resistive losses by about:
Question 5 of 5
The 1896 Niagara Falls power project demonstrated: