← All Topics

Electrical Theory: Magnetism

5 question stems · Page 1 of 1

Question 1

In a Step-Up transformer, how does the secondary current relate to the primary current, assuming no losses?

Question 2

In basic electromagnetism, how can the strength of the magnetic field produced by a solenoid be increased?

Question 3

In a Step-Down transformer with a primary voltage of 600V and a secondary voltage of 120V, what is the 'turns ratio' (primary to secondary)?

Question 4

A 25 kVA, single-phase 240/120 V transformer supplies a panelboard. The connected load is mainly 120 V lighting. What is the primary concern if the 120 V loads are heavily unbalanced between the two legs?

Question 5

Magnetic lines of force are assumed to exit the magnet from which pole?