The primary winding of an electric train transformer has 400 turns and the secondary has 50. If the input voltage is 120 V (rms) what is the output voltage?
A. 15 V (rms)
B. 30 V (rms)
C. 60 V (rms)
D. 2.4 V (rms)
E. 960 V (rms)
Answer: A
You might also like to view...
Suppose you viewed a movie that was running backwards. You would see lots of odd things happening: streams would flow uphill, and so forth
If these odd "backward-moving" things actually happened in nature, which principle or principles of physics would be violated? A) Newton's law of motion B) The second law of thermodynamics C) Both of the above. D) The law of conservation of energy E) All of the above.
When the equation Ca + H3PO4? Ca3(PO4)2 + H2 is balanced, the sum of all the coefficients (both written and "understood") is ______________
Fill in the blank(s) with correct word
The y-component of the electric field of an electromagnetic wave traveling in the +x direction through vacuum obeys the equation Ey = (375 N/C) cos[kx - (2.20 × 1014 rad/s)t]. (c = 3.0 × 108 m/s)
(a) What is the largest that the x-component of the wave can be? (b) What is the largest that the z-component of the wave can be? What will be an ideal response?
The motion of the tectonic plates is driven by
A) the gravitational pull of the Moon and Sun. B) the elliptical nature of Earth's orbit. C) heat moving by convection. D) magnetic repulsion. E) Earth's subsurface convection cycle.