World Science and Technology – Exercise – 3

116. Which device can be used to store charge?

(a) Transistor
(b) Diode
(c) Capacitor
(d) Resistor

Answer
Answer : (c)
Explanation
Explanation : Can be used in filtering circuits, also. Let us discuss.
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117. In a Digital circuit, what is 1 ‘AND’ 1?

(a) 0
(b) 1
(c) 2
(d) 4

Answer
Answer : (b)
Explanation
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118. Lately you hear a clatter from your computer, especially when you load a program or call up information. What’s going on?

(a) It’s infested with reindeer
(b) Your hard disk may be headed for failure
(c) A loose wire is hitting the cooling fan
(d) A loud metallic clatter is normal

Answer
Answer : (b)
Explanation
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119. Your computer has gradually slowed down. What’s the most likely cause?

(a) Overheating
(b) Your processor chip is just getting old
(c) Adware/spyware is infecting your PC
(d) You dropped a sandwich in your computer

Answer
Answer : (c)
Explanation
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120. The “desktop” of a computer refers to:

(a) The visible screen
(b) The area around the monitor
(c) The top of the mouse pad
(d) The inside of a folder

Answer
Answer : (a)
Explanation
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