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Student & Learning Zone - City & Guilds
(C&G 203 ?) Motor & Other Questions..
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<blockquote data-quote="bobby" data-source="post: 52799" data-attributes="member: 3466"><p>Thanks for that both of your awnsers were mostly the same feel better now im armed with those awnsers in my head for this exam next week <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> </p><p></p><p>Edit:</p><p></p><p>I found another way of working out Q.16 not sure if this is an easier way or even the same way as sarni did it but here is my formula:</p><p></p><p>16. A 3 phase 4 pole motor 50Hz induction motor has a slip of 4% the actual speed of the motor is:</p><p></p><p>A 1500prm</p><p></p><p>B 1440rpm</p><p></p><p>C 1400rpm</p><p></p><p>D 1359rpm</p><p></p><p>3000/2 = 1500</p><p></p><p>1500-1440 &lt;--- (picked 1 awnser randomly you may have to go through all 4 to get the correct percentage this is the forumlas downside)</p><p></p><p>= 60</p><p></p><p>60/1500 x 100 = 4% so I know the awnser is B.</p></blockquote><p></p>
[QUOTE="bobby, post: 52799, member: 3466"] Thanks for that both of your awnsers were mostly the same feel better now im armed with those awnsers in my head for this exam next week ;) Edit: I found another way of working out Q.16 not sure if this is an easier way or even the same way as sarni did it but here is my formula: 16. A 3 phase 4 pole motor 50Hz induction motor has a slip of 4% the actual speed of the motor is: A 1500prm B 1440rpm C 1400rpm D 1359rpm 3000/2 = 1500 1500-1440 <--- (picked 1 awnser randomly you may have to go through all 4 to get the correct percentage this is the forumlas downside) = 60 60/1500 x 100 = 4% so I know the awnser is B. [/QUOTE]
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(C&G 203 ?) Motor & Other Questions..
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