1. 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?
a) Transformer
b) Transponder
c) Transducer
d) Converter
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.
2. What was the active medium used in the first working laser ever constructed?
a) A diamond block
b) Helium-neon gas
c) A ruby rod
d) Carbon dioxide gas
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.
3. What does EPROM stand for??
a) Electric Programmable Read Only Memory
b) Erasable Programmable Read Only Memory
c) Evaluable Philotic Random Optic Memory
d) Every Person Requires One Mind
Explanation: A chip found in almost every microprocessor.
4. Blue is what number on the resistor color code?
a) 1
b) 4
c) 2
d) 6
Explanation: No explanation is given for this question
5. Changing computer language of 1's and 0's to characters that a person can understand is:
a) Highlight
b) Clip art
c) Decode
d) Execute
Explanation: No explanation is given for this question
6. Voltage is sometimes referred to as EMF, or Electromotive...?
a) Field
b) Factor
c) Flash
d) Force
Explanation: 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?
7. What does AM mean?
a) Angelo marconi
b) Anno median
c) Amplitude modulation
d) Amperes
Explanation: Amplitude modulation was the first type to be used in radio. It works well with HF and morse code.
8. '.BAT' extension refers usually to what kind of file?
a) Compressed Archive file
b) System file
c) Audio file
d) Backup file
Explanation: No explanation is given for this question
9. What is the term to ask the computer to put information in order numerically or alphabetically?
a) Crop
b) Report
c) Record
d) Sort
Explanation: No explanation is given for this question
10. The input used by an antenna or cable to a TV set uses frequencies called:
a) IF
b) RF
c) AF
d) SAP
Explanation: 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.