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Q1. | How many different BCD number can be stored in a register containing 12 switches using an 8, 4, 2, 1 code? |

A. | 99 [Wrong Answer] |

B. | 100 [Wrong Answer] |

C. | 999 [Wrong Answer] |

D. | 1000 [Correct Answer] |

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Explanation:-
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⇒ The maximum effective aperture of an antenna which is operating at wavelength of 2 m and has a directivity of 100 is __________ .

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List I | List II | ||
---|---|---|---|

A. | Silicon | 1. | is trivalent |

B. | Arsenic | 2. | rarely used as semiconductor |

C. | Indium | 3. | is pentavalent |

D. | Germanium | 4. | intrinsic semiconductor |

A-1, B-2, C-3, D-4

A-4, B-3, C-2, D-1

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