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Q1. | A rectangular wave guide is designed to propagate at the dominant mode TE_{10} at a frequency of 5 GHz. The cut-off frequency is 0.8 of signal frequency. The ratio of the guide width to height is 2. The dimensions of the guide are |

A. | 3.75 cm, 1.875 cm [Correct Answer] |

B. | 4 cm, 2 cm [Wrong Answer] |

C. | 8 cm, 4 cm [Wrong Answer] |

D. | 2.54 cm, 1.27 cm [Wrong Answer] |

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Explanation:-
Answer : ADiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Some features of RF stage in good radio receivers is

- It increases sensitivity by providing amplification to RF signal
- It eliminates image frequency interference
- It increases selectivity
- It reduces noise level

1, 2 and 3 only

1, 2 and 4 only

2, 3, 4 only

1, 2, 3, 4

⇒ The skip distance is

same for each layer

independent of frequency

independent of the state of ionisation

independent of transmitted power

⇒ Which of the following components is essential for a voltage multiplier circuit?

Resistor

Inductor

Capacitor

Both (a) and (c)

⇒ In amplitude modulation the rms value of radio frequency voltage after 40% modulation is 60 mV. If modulation is 80% the rms value after modulation will be about

50 mV

60 mV

66 mV

80 mV

⇒ Push pull amplifier is

class B

class A

class C

Class A or Class C

⇒ For an ideal 3000 Hz channel, S/N ratio is

3

1.5

4

2

⇒ From the noise point of view, bandwidth should

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should be as large as possible

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⇒ A two branch parallel tuned circuit has a capacitance C in one of the two branches and resistance R in second branchs. As C is decreased the dynamic resistance

increases

decreases

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⇒

**Assertion (A):** Tristate logic is used for bus oriented systems

**Reason (R):** The outputs of a tristate logic are 0, 1 and indeterminant.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

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paddar capacitor

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⇒ Karnaugh map can not be drawn when the number of variables is more than 4

TRUE

FALSE

⇒ An RC series circuit has R = 20 Ω and X

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⇒ In van der walls crystals, there exists a high degree of stability of the outer electron shell.

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FALSE

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⇒ Δ

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⇒ Paper capacitors are used in power supplies for filtering.

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⇒ An ac circuit has an impedance of (3 +

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⇒ Which one of the following is valid integer variable in FORTRAN 77?

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⇒ A minimum function has

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only poles but no zeros on imaginary axis of

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only zeros but no poles on imaginary axis of

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⇒ TV receivers use flyback switched mode power supply because

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⇒ Which one of the following statements is wrong. The radar cross-section of a target?

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depends on the aspect of target if it is non-spherical

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*e*

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*f*-

*f*

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1

δ(

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∞

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2.0 A

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