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الیکٹرانکس

بارہویں جماعت · طبیعیات · 5 سوالات

نام: ____________________   تاریخ: ____________

  1. In an n type semiconductor the majority carriers are:

    • A Neutrons
    • B Holes
    • C Electrons
    • D Protons

  2. A p n junction diode conducts when it is:

    • A Heated only
    • B Reverse biased
    • C Forward biased
    • D Never

  3. A transistor can act as an:

    • A Only a resistor
    • B Amplifier or a switch
    • C Only a battery
    • D Only a capacitor

  4. An operational amplifier has an ideal input resistance of:

    • A Zero
    • B 1 ohm
    • C 100 ohm
    • D Infinity

  5. A NAND gate output is 0 only when:

    • A Both inputs are 1
    • B Both inputs are 0
    • C Inputs differ
    • D Any input is 1

جوابی کلید

1. C, 2. C, 3. B, 4. D, 5. A

  1. Donor impurities add free electrons.

  2. Forward bias lowers the barrier and lets current flow.

  3. It can amplify signals or switch current on and off.

  4. An ideal op amp draws no input current.

  5. NAND is the opposite of AND.