1.What type of energy comes out of a generator? A. Mechanical C thermal B. Electrical D. Potential 2. In what way is a DC generator different from an AC generator? A. The DC generator is operated by an applied voltage B. A DC generator follow Faraday's law while an AC generator works according to Lenz's law C. A DC generator creates an electric current that flows in one direction while the current produced in an AC generator flows in two direction alternately D. A DC generator creates an electric current that flows in a definite direction while the flow of current produced in an AC generator has no definite direction 3.The greater the number of loops in the coil of wire, the A. greater is the amount of friction which results in lower induced voltage. B. greater is the amount of heat produced c. greater is the amount of induced voltage produced D. smaller the magnetic field around the wire 4. All of the following are parts of an AC generator except A. Magnets C. commutators B. slip rings D. carbon brushes 5. in large generators in power plants rotate inside a coil of wire to produce an electric current. A. Wind C. Magnets B. Water D. Circuits 6. What is the speed of the electromagnetic wave in a vacuum? A Zero B. Always the same as the speed of light C Changing depending on the value of its wavelength D. None of the above 7. How are electromagnetic waves produced? C Vibrating charge A. Any disturbance B. Currents 8. What happens to the frequency of the electromagnetic wave if its wavelength increases? D. Voltage source A. It decreases C. It remains the same. B. It increases as well D. None of the above 9. In the electromagnetic wave, what is the direction of the propagation of the wave? A. Always to the right B. Cannot be determined C. Parallel to electric and magnetic field directions D. Perpendicular to the electric and magnetic field directions 10. Which of the following forms of electromagnetic waves has the widest frequency range? A. X-ray C. Ultraviolet B. Microwave D. Radio waves