Question: The electromagnetic coils on the neck of the picture tube or tubes which pull the electron beam from side to side and up and down are called a...?
Incorrect Answer
Correct Answer Twisting the yoke will tilt the picture. A projection color television uses three picture tubes and yokes for red, green and blue light.
Question: The input used by an antenna or cable to a TV set uses frequencies called...?
Incorrect Answer
Correct Answer RF is radio frequency. IF is intermediate frequency used inside the TV for processing. AF is audio frequency. SAP is second audio program which may have another language or other soundtrack as an option to the main soundtrack.
Question: The transformer that develops the high voltage in a home television is commonly called a...?
Incorrect Answer
Correct Answer The flyback is usually connected to the system that pulls the electron beam across the screen in one direction to 'paint' a line of the image and then returns in the other direction much faster.
Question: Most modern TV's draw power even if turned off. The circuit the power is used in does what function?
Incorrect Answer
Correct Answer Some authorities are recommending TV's, VCR's and Stereo's be connected to power strips with switches and turned off when not in use to save energy. Your remote will not work until power is switched back on.
Question: In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about...?
Incorrect Answer
Correct Answer This voltage often remains in storage even if the set is unplugged. Although the voltage is very high it has very low power but it can be dangerous because your body jumps if brought in contact.
Question: In the United States the television broadcast standard is...?
Incorrect Answer
Correct Answer PAL and SECAM are standards used in other countries. RGB stands for red, green, and blue - the colors of light used to create an image in a color tv set and is often used as a format name for computer monitors.
Question: Which is NOT an acceptable method of distributing small power outlets throughout an open plan office area?
Incorrect Answer
Correct Answer Extension cords can be a tripping hazard, and can be easily damaged, causing an unsafe situation. There are many ways of safely getting power to each work place, where wiring is protected and concealed.
Question: Which of the following is an international protocol for lighting control?
Incorrect Answer
Correct Answer DALI stands for Digital Addressable Lighting Interface, and was developed as an industry standard. All leading electronic control gear manufacturers, such as Osram, Philips and Helvar, abide by this protocol, which allows for interchangeability of elements.
The other terms are made up.
