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What is the average value of sinusoidal AC during a half cycle?

Important Questions on Alternating Current

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 18
What does an A.C. ammeter measure?
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 19
What is the power factor of an L-C-R circuit at resonance?
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 20
What is meant by wattless current?
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 21
Why is AC more dangerous than DC of the same voltage?
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 22
A 100 V D.C. heater is used on an ac source such that the heat produced is the same. What is the R.M.S. value of ac voltage?
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 23
The instantaneous current is I=5sin314t. What is the R.M.S. current?
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 24
Do we require AC or DC for long-distance transmission?
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 25
Why is the core of a transformer laminated?