Technology MCQs

✅ The correct answer is option D.

✅ The correct answer is option D.
It is a method of controlling the speed of an AC induction motor, whereby speed, current and torque can all be accurately controlled.

✅ The correct answer is option B.

✅ The correct answer is option D.
“Noise figure” is one critical parameter for determining the “quality” of a low-noise, small-signal, amplifier, and perhaps more importantly, the sensitivity of the overall receiver system. It is especially important for VHF (very high frequency) – and higher frequency – designs where most of the undesired “noise” (noise that masks or overpowers the desired signals) is generated internal to the electronics itself. In HF (high frequency) applications, atmospheric noise plays a much larger role in determining overall useful sensitivity, so a circuit’s “noise figure” is less important.

✅ The correct answer is option A.
UPS stands for Uninterruptible Power Supply. Examples of equipment that may require a UPS supply are computers, fire detection systems, hospital operating theatre equipment and escape route lighting.

✅ The correct answer is option C.

✅ The correct answer is option C.

✅ The correct answer is option B.
The Intel 8080 was a jazzed-up calculator chip. It was included in microcomputer kits which were little more than demonstration tools and did little except blink lights. Besides the 8080 chip, the Altair included a power supply, a front panel with a large number of lights and 256 bytes (not kilobytes) of memory. The kit sold for {$395} and had to be assembled.

✅ The correct answer is option C.

✅ The correct answer is option C.
A NIC is a Network Interface Card. Usually a card that is plugged into a computer’s expansion slot.