Wireman – Semester 3, Module 4 - DC Generator
Common for Wireman Trade 2nd Year
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NAME *
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NAME OF THE ITI *
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MOBILE NUMBER *
1 : What is the working principle of DC generator? *
2 points
2 : What type of Emf is induced in DC generator? *
2 points
3 : What rule is used to find the direction of induced emf in DC generator? *
2 points
4 : Which generator the field winding is connected across the armature? *
2 points
5: Which type of DC generator can be called as a constant voltage generator? *
2 points
6 : Which part of a DC generator is laminated? *
2 points
7 : Which material is used for commutator segment? *
2 points
8 : Identify the part marked as X in figure? *
2 points
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9 : What is the function of commutator in DC generator? *
2 points
10: Where the brushes are housed in DC generator? *
2 points
11: Which part of the DC generator helps to spread out field flux in the air gap? *
2 points
12 : What is indicated by letter N in this formula? *
2 points
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13 : Which is the formula of emf equation in wave wound DC generator? *
2 points
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14 : What will happen, if shunt field resistance is too large? *
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15: Which determines the polarity of induced emf in DC shunt generator? *
2 points
16 : Which type of DC generator is used as booster generator? *
2 points
17 : Which type of compound generator is illustrated? *
2 points
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18 : Which generator has both shunt and series field winding? *
2 points
19 : What is the name of DC generator? *
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20 : Which generator, shunt field flux is opposed by series field flux? *
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21 : Which DC compound generator the shunt field is connected in parallel to armature only? *
2 points
22: What is the function of series field winding in cumulative compound generator? *
2 points
23 : What is the full form of TPT? *
2 points
24 : What is the full form of GNA? *
2 points
25 : How the effect of cross magerising effect is nullified? *
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26 : What is the function of compensating winding in DC machine? *
2 points
27 : What is the function of interpole in DC machine? *
2 points
28 : What is the name of part marked as X? *
2 points
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29: What is the full form of MNA? *
2 points
30: How the compensating winding is connected with the armature of DC machine? *
2 points
31: How the inter poles are connected to the armature of a DC machine *
2 points
32 : What is the effect of rough commutation in DC generators? *
2 points
33 : Which generator has very high value of voltage regulation? *
2 points
34 : Which of the following is the voltage equation for DC series generator? *
2 points
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35: Which type of DC generator is used for welding purpose? *
2 points
36 : Which type of DC generator is used for centrifugal pump? *
2 points
37 : Which type of DC compound generator is used for light and power load? *
2 points
38 : Which of the following generator does not build up voltage if load is not connected? *
2 points
39: What is the condition of voltage while operating DC generators in parallel? *
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40 : Where the positive terminal of the generator is connected while parallel operation? *
2 points
41 : How load is shifted from one generator to other when DC generators are operating in parallel? *
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42: Which of the following is the necessity of parallel operation of DC generators? *
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43: What is the cause for the fault, that brush makes chattering noise? *
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44: What is the cause for the fault that bearing over heating in DC generator? *
2 points
45: What is the cause for the fault that heavy sparking in light loads in DC generator? *
2 points
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