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# PHY301 - Circuit Theory Quiz # 02 Due Date Aug 06, 2014

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### Replies to This Discussion

For farward biased condition of P-N junction

• +Ve polarity  to N electrode  and -Ve polarity to  P electrode
• +Ve polarity  to  both N and P electrode
• +Ve polarity  to P electrode  and -Ve polarity to  N electrode
• -Ve polarity  to  both N and P electrode

Addition of impurities in semiconductor material to produce more current is called

• Intrinsic
• Dopping
• Bonding
• Excitation

To which of the winding of transformer alternating voltage is applied

• primary winding
• secondary winding

The primary and secondary winding of transformer are

• physically touched
• physically isolated
• touched with conductor
• largely separated

When magnitude of reverse voltage exceeds a threshold value specific to a particular diode...........

• reverse bias region is entered
• farward  bias region is entered
• break down region is entered
• saturation region is entered

which of the followings are semiconductor devices

• diodes and transformers
• transistor and transformer
• diode and transistor
• inductor and capacitor

If ideal diode in a simple circuit is in reversed biased condition

• it will act as an open circuit
• current (I)=o
• no current will flow
• all of these

When electrons leave the N- material to fill holes in the P-material , the process is called

• Doping
• Mixing
• Depletion
• Diffusion

A diode is a

• one way conductor
• two way conductor
• three way conductor
• insulator

When the turn ratio of a transformer is 5 and primary ac voltage is 10v, the secondary voltage is

• 100v
• 25v
• 50v
• 2v

Best Of Luck All Of You

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