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# DC Generator Quiz

Created by
@NobleChrysocolla

### What is the name of the part marked as 'X' in a DC generator?

• Brush
• Armature core
• Commutator raiser (correct)
• Differential long shunt compound
• ### What is the name of the rule used to find the direction of induced emf in a DC generator?

• Right hand palm rule
• Cork screw rule
• Fleming’s left hand rule
• Fleming’s right hand rule (correct)
• ### Which formula is used to calculate the generated emf in a DC generator?

• Generated emf = \phi ZN P x Volt
• Generated emf = \phi ZN x A Volt
• Generated emf = \phiZN P Volt (correct)
• Generated emf = \phi ZN x P Volt
• ### What is the name of the part marked 'X' in a DC generator?

<p>Cumulative long shunt compound</p> Signup and view all the answers

### What is the formula to calculate back emf of a DC motor?

<p>Back emf = \phiZN P Volt</p> Signup and view all the answers

## Study Notes

### DC Generator Components

• The part marked 'X' in a DC generator is the brush.

### DC Generator Rules and Formulas

• The rule used to find the direction of induced emf in a DC generator is Fleming's Right-Hand Rule.
• The formula used to calculate the generated emf in a DC generator is ε = (ΦNPBA*f)/60, where ε is the generated emf, Φ is the flux, N is the speed, P is the number of poles, B is the flux density, A is the area, and f is the frequency.

### DC Motor Formula

• The formula to calculate back emf of a DC motor is Eb = (PΦN)/60, where Eb is the back emf, P is the number of poles, Φ is the flux, and N is the speed.

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## Description

Test your knowledge on DC generators with this quiz focused on the 3rd semester of the Electrician trade under NSQF. Challenge yourself with questions on identifying generator parts, finding induced EMF direction, and calculating generated EMF and back EMF.

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