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The question has statement - 1 and stat...

The question has statement - 1 and statement - 2 Of the four choices given after the statements , choose the one that best describes the two statements
statement - 1 : Sky wave signals are used for long distance radio communication . These signals are in generel , less stable then ground wave signals
statement - 2 : The state of inosphere varies from to hour day and season to season .

A

Statement-1 is true, Statement-2 is true and Statement-2 is not the correct explanation of Statement-1

B

Statement-1 is false, Statement-2 is true

C

Statement-1 is true, Statement-2 is false

D

Statement-1 is true, Statement-2 is true , Statement-2 is not correct explanation of Statement-1.

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The correct Answer is:
A
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ALLEN -SEMICONDUCTORS-Part-3(Exercise-4)
  1. The logic circuit shown below has the input waveform 'A' and 'B' as sh...

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  2. The combination of gates shown below yields :-

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  3. The question has statement - 1 and statement - 2 Of the four choices ...

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  4. If the output of the OR gate is connected to both inputs of the NAND g...

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  5. Which of the following four alternatives is not correct, We need modul...

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  6. Truth table for system of four NAND gates as shown in figure is : .

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  7. A diode detector is used to detect an amplitude modulated wave of 60% ...

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  8. The I- V characteristic of on LED is

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  9. The forward biased diode connection is

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  10. A single of 5 kHz frequency is amplitude modulated on a carrier wave o...

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  11. In an unbiased p-n junction electrons diffuse from n-region to p-regio...

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  12. A 2V battery is connected across AB as shown in the figure. The value ...

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  13. The value of the resistor, R(S), needed in the dc voltage regulator ci...

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  14. Choose the correct statement.

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  15. For common emitter configuration, if alpha and beta have their usual m...

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  16. if a,b,c,dare inputs to a gate and x is its output , then as per the f...

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  17. The temperature dependence of resistances of Cu and undoped Si in the ...

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  18. An audio signal consists of two distinct sound. One a human speech sig...

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  19. An unknown transistor needs to be identified as npn and pnp type. A mu...

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  20. An experiment is preformed to determine the I-V characteristics of a Z...

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