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Student & Learning Zone - City & Guilds
Be posting soon level 2 2330 unit 202 and 203
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<blockquote data-quote="welshwizard" data-source="post: 187" data-attributes="member: 3"><p><strong>a.c. and d.c. Supplies:</strong></p><p></p><p>1/. What is the period if the frequency is 75 Hz?</p><p></p><p>2/. If the cycle is 7.6 ms. What will be the frequency?</p><p></p><p>3/. What maximum voltage do I need to achieve an ms voltage of 254 V? State the peak and the peak-to-peak voltage also.</p><p></p><p>4/. If I have a 440 V supply, what will be the maximum voltage? State also, the peak voltage and the peak-to-peak voltage.</p><p></p><p>5/. What two things is the value of inductance affected by?</p><p></p><p>6/. Give two examples of an inductor.</p><p></p><p>7/. State the symbol and the unit for the inductor.</p><p></p><p>8/. State the three common ways of producing d.c.</p><p></p><p>9/. Which two types of d.c. supply would you use to power a games console?</p><p></p><p>10/. What do you use to convert a d.c. generators' supply to true d.c?</p><p></p><p>11/. Why is a capacitor used in a bridge rectifier?</p><p></p><p>12/. Draw a full wave bridge rectifier.</p><p></p><p>Electrician Forum 2008 (<a href="http://www.electricianforum.co.uk/" target="_blank">www.electricianforum.co.uk</a>)</p></blockquote><p></p>
[QUOTE="welshwizard, post: 187, member: 3"] [B]a.c. and d.c. Supplies:[/B] 1/. What is the period if the frequency is 75 Hz? 2/. If the cycle is 7.6 ms. What will be the frequency? 3/. What maximum voltage do I need to achieve an ms voltage of 254 V? State the peak and the peak-to-peak voltage also. 4/. If I have a 440 V supply, what will be the maximum voltage? State also, the peak voltage and the peak-to-peak voltage. 5/. What two things is the value of inductance affected by? 6/. Give two examples of an inductor. 7/. State the symbol and the unit for the inductor. 8/. State the three common ways of producing d.c. 9/. Which two types of d.c. supply would you use to power a games console? 10/. What do you use to convert a d.c. generators' supply to true d.c? 11/. Why is a capacitor used in a bridge rectifier? 12/. Draw a full wave bridge rectifier. Electrician Forum 2008 ([URL="http://www.electricianforum.co.uk/"]www.electricianforum.co.uk[/URL]) [/QUOTE]
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Be posting soon level 2 2330 unit 202 and 203
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