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For a given plate voltage , the plate cu...

For a given plate voltage , the plate current in a triode valve is maximum when the potential of

A

The grid is positive and plate is negative

B

The grid is positive and plate is positive

C

The grid is zero and plate is positive

D

The grid is negative and plate is positive

Text Solution

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The correct Answer is:
B
When grid is given positive potential more electrons will cross the grid to reach the positive plate `P`. Hence current increases.
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A2Z-SEMICONDUCTOR ELECTRONICS-EXERCISE
  1. Two PN-junction can be connected in series by three different methods ...

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  2. In a p- n junction diode not connected to any circuit,

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  3. Which of the following statements is not true?

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  4. The dominant mechanisms for motion of charge carriers in forward and r...

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  5. For a given plate voltage , the plate current in a triode valve is max...

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  6. The probbility of electrons to be found in the conduction band of an i...

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  7. The typical ionisation energy of a donor in silicon is

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  8. In the circuit given below, V(t) is the sinusoidal voltage source, vol...

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  9. The circuit shown in following figure contanis two diode D(1) and D(2)...

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  10. The following configuration of gate is equivalent to

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  11. The output of a NAND gate is 0

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  12. We are accustomed to decinnial form of stating numbers. For example 12...

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  13. Given below are four logic tage symboles. Those for OR, NOR and NAND a...

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  14. Consider a two -input AND gate of figure. Out of the four entries for ...

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  15. Given below are symbols for some gates. The OR gate and the AND gate, ...

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  16. The junction diode in the following circuit requires a minimum current...

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  17. In a silicon transistor, the base current is changed by 20 muA. This r...

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  18. Assertion: We can measure the potential barrier of a PN junction by pu...

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  19. Assertion: Semiconductor do not obey Ohm's law. Reason: Current is d...

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  20. Assertion: In a transistor amplifier, the output voltage is always out...

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