Technology MCQs

✅ The correct answer is option B.
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.

✅ The correct answer is option D.
The first laser was a solid state laser. Solid state refers to any solid material like a glass rod. Diode lasers are very common because they are used to read compact disks and digital video disks in computers, CD players, and DVD players. Before diode lasers, the most common type of laser may have been the helium-neon laser, in which the active medium is a combination of the two gasses helium and neon.

✅ The correct answer is option C.
SPICE (Simulation Program with Integrated Circuit Emphasis) was introduced in May 1972 by the University of Berkeley, California.

✅ The correct answer is option C.
Theodore Maiman built the first working laser using a ruby rod while working at Hughes Research Laboratories in Malibu, California. It lased for the first time on May 16, 1960.

✅ The correct answer is option B.
The word “laser” is actually an acronym for light amplification by stimulated emission of radiation. Atoms or molecules of the active medium that have been excited to a higher energy level are stimulated by a passing photon to relax to a lower energy level and emit a photon that is indistinguishable from the passing photon, thereby increasing the number of photons like the incident one.

✅ The correct answer is option B.
Useful in tuning and filtering circuits, it blocks DC while passing AC. How much charge a capacitor can store is its capacitance, measured in farads.nn

✅ The correct answer is option D.
On April 6, 1914, Hiram Percy Maxim proposed the formation of the American Radio Relay League.

✅ The correct answer is option C.

✅ The correct answer is option D.
The HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.

✅ The correct answer is option A.
About the same as as the most popular light bulb size.