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Q1. | If D is diameter of circular waveguide the cutoff wave-length for TE_{11} mode is equal to |

A. | 1.706 D [Correct Answer] |

B. | 2.11 D [Wrong Answer] |

C. | 0.82 D [Wrong Answer] |

D. | 0.41 D [Wrong Answer] |

View Answer
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 advantages of optical fibre cables are

- small diameter
- Immunity to cross talk and EM interference
- Laser and LED modulation methods lend themselves ideally to digital operation

1 only

1 and 2

1, 2, 3

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⇒ If the inputs to a 3 bit binary adder are 111

_{2}and 111

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TRUE

FALSE

⇒ In direct addressing mode of 8085

All instructions are 3 bytes long

All instructions are 3 bytes long except IN instruction which is 2 bytes long

All instructions are 3 bytes long except IN and OUT instructions which are 2 bytes long

All instructions are 2 bytes long

⇒ For an unstable system the gain margin is indicative of how much the gain should be decreased to make the system stable.

TRUE

FALSE

⇒ If

*e*= 10 sin(10

^{8}

*t*+ 3 sin 10

^{4}

*t*) then the deviation is

4.77 kHz

47.7 kHz

477 kHz

4770 kHz

⇒ The no. of FF required and the maximum decimal no. of a MOD-12 counter is

12, 12

4, 11

3, 6

4, 10

⇒ When a semi-conductor is doped, its electrical conductivity

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decreases in the direct ratio of the doped material

decreases in the inverse ratio of the doped material

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⇒ In a D latch

D drives R and D drives S

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D drives both R and S

D drives both R and S

⇒ The adjustment of position of shading bands, in an energy meter, is done to provide

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creep compensation

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none of the above

⇒ A dipole antenna was radiating with some excitation in free space radiating a certain amount of the power. If this antenna is immersed in a lake where water is non-dissipative but has a dielectric constant of 81, the radiated power with the same excitation will

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⇒ The impulse response

*h*(

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*x*(

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*t*, is

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2

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⇒ A series RC circuit has R = 5 Ω and C = 10 μF. The current in the circuit is 5 sin 20000

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252 sin (20000

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⇒ It is possible to copy a file in the same directory.

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⇒ For a given line voltage, four heating coils will produce maximum heat when connected

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⇒ Electromagnetic cavity resonators (energy storage devices) are used in

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612 kHz

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⇒ The Gain margin for the system with open loop transfer functi

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⇒

**Assertion (A):** The small signal analysis of a transistor amplifier is done to obtain the current gain, voltage gain and the conversion efficiency of an amplifier.

**Reason (R):** The small signal analysis of a transistor amplifier uses the small signal parameters of the transistor.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ In the fabrication of n-p-n transistor in an IC, the buried layer on the P-type substrate is

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- A flip-flop is used to store 1-bit of information.
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`F = B * COS (Y) + C * SQR [COS (Y)] + A * COS (Y) * SQR [COS (Y)]`

`F = B * COS (Y) + C * COS(Y) * COS (Y) + A * COS (Y) * COS (Y) * COS (Y)`

` X = COS(Y)`

⇒ The circuit shown in the figure

positive logic OR circuit

negative logic OR circuit

positive logic AND circuit

negative logic AND circuit

⇒ **Assertion (A):** R-2R ladder type DAC has higher speed of operation than weighted resistor DAC

**Reason (R):** R-2R ladder type DAC uses only two different values of resistor network uses many different values of resistors

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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