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
Answer: Option A
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.
To which country dose the present UN Secretary-General belongs?
A.
Ghana
B.
South Korea
C.
Spain
D.
Sweden
Answer: Option B
Explanation:
The current Secretary-General is Ban Ki-moon of South Korea, who took office on 1 January 2007. His first term will expire on the 31st of December 2011, and he will be eligible for reappointment.
Where did the three leaders, F.D. Roosevelt, Winston Churchill and Joseph Stalin, meet in 1943 and agreed on the need for maintaining international peace?
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