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General Knowledge - Technology

Exercise : Technology - Section 1
66.
Larger buildings may be supplied with a medium voltage electricity supply, and will required a substation or mini-sub. What is the main item of equipment contained in these?
Transformer
Transponder
Transducer
Converter
Answer: Option
Explanation:
The transformer is used to transform a medium voltage supply to a low voltage supply, e.g. from 11 000 V to 400 V. A transformer is rated in kVA, kilo-Volt-Amps, which is a measurement of electrical power.
67.
What was the active medium used in the first working laser ever constructed?
A diamond block
Helium-neon gas
A ruby rod
Carbon dioxide gas
Answer: Option
Explanation:
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.
68.
What does EPROM stand for?
Electric Programmable Read Only Memory
Erasable Programmable Read Only Memory
Evaluable Philotic Random Optic Memory
Every Person Requires One Mind
Answer: Option
Explanation:
A chip found in alomst every microprocessor...
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