Answer:
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Explanation:
Two types of power supplies exist, DC-DC and AC-DC. DC-DC power supplies allow you to plug in electrical devices into car outlets or similar sources that supply direct current, or DC, power. These power supplies are not the most commonly used, though.
Classification of Power Supply and Its Different Types
OUTPUT = DC OUTPUT = AC
INPUT = AC Wall wart Bench power supplies Battery charger Isolation transformer Variable AC supply Frequency changer
INPUT = DC DC-DC converter Inverter Generator UPS
The answer & explanation for this question is given in the attachment below.
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Answer: 0.1937
Explanation:
Given : A bowl contains 20 candies; 15 are chocolate and 5 are vanilla.
If we select 5 candies, then the number of ways to select them is given by permutations.
The number of ways to select 5 candies is given by :-
The number of ways of selecting any 5 candies out of 20:-
Now, the probability that all 5 are chocolate :-
Hence, the probability that all 5 are chocolate =0.1937