Review unit 4 part 4

Which type of polarity is shown in the figure?

• Parallel

• Additive

• Series

• Subtractive

According to the voltmeter reading. What type of polarity is shown in the figure?

• Series

• Subtractive

• Additive

• Parallel

What test is being performed in the figure shown?

• polarity test

• short circuit test

• ground test

• open circuit test

What test is being performed in the figure shown?

• polarity test

• short circuit test

• ground test

• open circuit test

What test is being performed in the figure shown?

• polarity test

• short circuit test

• ground test

• open circuit test

What is Continuity test on a transformer?

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• 
• 
• 

What is Insulation test on a transformer?

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• 
• 
• 

What is Ground test on a transformer?

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• 
• 
• 

Which one of the following is an advantage of three-phase power over single-phase power?

• There will be interruption total power.

• It only supplies line-to-line single-phase voltage.

• It does not have constant level power and high cost

• It can service for both single and three-phase load.

Which one of the following is an advantage of three-phase power over single-phase power?

• 
  Smaller operating machines with better operating characteristics

• It only supplies line-to-line single-phase voltage.

• It does not have constant level power and high cost

• It can service for three-phase load.