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Practice MCQ Questions and answers on Technology-GK

Learn and practice General Knowledge questions and answers on Technology with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-7 section-1

Each section contains 100 MCQs on Technology .
61
Voltage is sometimes referred to as EMF, or Electromotive...?
Discuss
Answer & Solution
Answer: Option D
Solution:
The term EMF, or Electromotive Force, its use now in decline, is attributed to Italian physicist Alessandro Volta (1745-1827). Today we generally use the term "voltage" - can you guess why we call it that?
62
What does AM mean?
Discuss
Answer & Solution
Answer: Option C
Solution:
Amplitude modulation was the first type to be used in radio. It works well with HF and morse code.
63
'.BAT' extension refers usually to what kind of file?
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
64
What is the term to ask the computer to put information in order numerically or alphabetically?
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
65
The input used by an antenna or cable to a TV set uses frequencies called:
Discuss
Answer & Solution
Answer: Option B
Solution:
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.
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?
Discuss
Answer & Solution
Answer: Option A
Solution:
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?
Discuss
Answer & Solution
Answer: Option C
Solution:
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?
Discuss
Answer & Solution
Answer: Option B
Solution:
A chip found in almost every microprocessor.
69
Blue is what number on the resistor color code?
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
70
Changing computer language of 1's and 0's to characters that a person can understand is:
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board