Amplification factor of a triode is 10. When the plate potential is 200 volt and grid potential is – 4 volt, then the plate current of 4mA is observed. If plate potential is changed to 160 volt and grid potential is kept at – 7 volt, then the plate current will be
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(a) 1.69 mA |
(b) 3.95 mA |
(c) 2.87 mA |
(d) 7.02 mA |
(a) 1.69 mA
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In the circuit given E = 6.0 V, R1 = 100 ohms, R2 = R3 = 50 ohms, R4 = 75 ohms. The equivalent resistance of the circuit, in ohms, is
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(a) 11.875 |
(b) 26.31 |
(c) 118.75 |
(d) None of these |
To make a PN junction conducting
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(a) The value of forward bias should be more than the barrier potential |
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(b) The value of forward bias should be less than the barrier potential |
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(c) The value of reverse bias should be more than the barrier potential |
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(d) The value of reverse bias should be less than the barrier potential |
What fraction of a radioactive material will get disintegrated in a period of two half-lives
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(a) Whole |
(b) Half |
(c) One-fourth |
(d) Three-fourth |
In the following diagram if V2 > V1 then
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(a) |
(b) |
(c) |
(d) |
The average number of prompt neutrons produced per fission of 
is
|
(a) More than 5 |
(b) 3 to 5 |
(c) 2 to 3 |
(d) 1 to 2 |
Assertion : The following circuit represents 'OR' gate
Reason : For the above circuit Y = 
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
