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Q1. | The usable bandwidth of ridge wave guide |

A. | is lower than that of rectangular waveguide [Wrong Answer] |

B. | is higher than that of rectangular waveguide [Correct Answer] |

C. | is almost same as that of rectangular waveguide [Wrong Answer] |

D. | is very small as compared to that of rectangular waveguide [Wrong Answer] |

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Explanation:-
Answer : BDiscuss 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 :**

⇒ A 4 bit transistor register has output voltage of high-low-high-low. The binary number stored and its decimal equivalent are

0101 and 5

0101 and 10

1010 and 5

1010 and 10

⇒ The Thevenin's equivalent of network in figure(1) is a 10 V source in series with 2 Ω resistance. If a 3 Ω resistance is connected across AB as shown in figure(2) the Thevenin's equivalen

10 V in series with 1.2 Ω resistance

6 V in series with 1.2 Ω resistance

10 V in series with 5 Ω resistance

6 V in series with 5 Ω resistance

⇒ F.T. of continuous non-periodic signal is

aperiodic

periodic

a and b

none

⇒ Measurement of Hall coefficient enables the determination of

mobility of charge carriers

type of the conductivity and concentration of charge carriers

temperature coefficient and thermal conductivity

fermi level and forbidden energy gap

⇒ Two voltages are 50 ∠0 V and 75 ∠ - 60° V. The sum of these voltages is

109 ∠ - 60° V

109 ∠ - 25° V

109 ∠ - 36.6° V

100 ∠ - 50.1° V

⇒ In a 3 phase bridge inverter with 180° mode of operation the numbers of thyristors conducting at one time are

1

2

3

4

⇒ In a transistor leakage current mainly depends on

doping of base

size of emitter

rating of transistor

temperature

⇒ Which of the following is the main difference between waveguide and transmission line?

Waveguides cannot be coupled to coaxial lines

Waveguides have no standing wave ratio

Transmission line does not suffer from the effect of low cut off frequency

Waveguides are not distributed like transmission lines

⇒ For static electric and magnetic fields in an homogenous source-free medium, which of the following represents the correct form of Maxwell's equations?

Δ.E = 0

Δ.E = 0

Δ x E = 0

Δ x E = 0

⇒ The fabrication of microstrip line is done by

photo etching

printed circuit technique

oxidation

cladding

⇒ A uniform wave have components

in the perpendicular direction E existing while H is zero

in the direction of propagation E existing while H is zero

E and H are zero in direction perpendicular to direction of propagation

E and H existing only in direction perpendicular to direction of propagation

⇒ The dynamic equalising circuit consists of a series combination of capacitor C and resistor R

_{C}across each thyristor. This resistance R

_{C}(along with parallel connected diode)

limits charging current

limits discharging current

limits both charging and discharging currents

none of the above

⇒ The percentage limiting error in an instrument reading 8.3 V and having guaranteed accuracy of 1% of the full scale reading and range of 0-150 V is

0.0181

0.00181

0.181

0.000018

⇒ Semiconductors have

aero temperature coefficient of resistance

positive temperature coefficient of resistance

negative temperature coefficient of resistance

none of the above

⇒ An inductor filter has a ripple that __________ with load resistance and consequently is used only with relatively __________ load currents.

decreases, low

decreases, high

increases, low

increases, high

⇒ Linear diode detector utilizes

linear portion of static characteristics of diode

linear portion of dynamic characteristic of diode

square law portion of dynamic characteristics of diode

rectification property of diode

⇒ Which of the following is true?

SOP is a two level logic

POS is a two level logic

Both SOP and POS are two level logic

Hybrid function is two level logic

⇒ At absolute temperature

the forbidden energy gap in germanium is higher than that in silicon

the forbidden energy gap in germanium and silicon are equal

the forbidden energy gap in silicon is higher than that in germanium

none of the above

⇒ In a proportional plus integral control action

proportional gain K

*is adjustable but integral time T*

_{p}*is constant*

_{i}proportional gain K

*is adjustable but integral time T*

_{p}*is adjustable*

_{i}both proportional gain K

*and integral time T*

_{p}*are adjustable*

_{i}both proportional gain K

*and integral time T*

_{p}*are constant*

_{i}⇒ When two conductors carry currents in the same direction the force is repulsive.

TRUE

FALSE

⇒ Consider the following statements as regards noise

- If Gaussian noise is applied at input of a rectifier, the output is not gaussian
- The noise encountered on a telephone line consists of short, pulse type disturbances whose amplitude distribution is not Gaussian
- Shot noise results from random emission of electrons from a cathode
- Shot noise results from phenomenon associated with the flow of current across semi conductor junctions

1, 2, 3, only

1, 2, 4 only

1, 2, 3, 4

2, 3 only

⇒ The advantage of using dual slope

*ADC*in digital voltmeter is that

its conversion time is small

its accuracy is high

its output is in BCD

it does not require a comparator

⇒ 1's complement of 11100110 is

11001

10000001

11010

0

⇒ If

*f*(

*t*) is in volts, then F(

*j*ω) is in

volts

volt seconds

volts/sec

volt-sec

^{2}

⇒ The word size accessible at a time from the memory subsystem depends on

width of data bus

width of address bus

width of control bus

both (b) and (c)

⇒ If each stage has a gain of 10 dB and noise figure of 10 dB, then the overall noise figure of a two stage cascade amplifier will be

10

1.09

1

10.9

⇒ The drift velocity of electrons and holes is proportional to electric field strength.

TRUE

FALSE

⇒ The slope of log magnitude asymptote changes by - 40 dB/ decade at a certain frequency and the error between asymptote and actual curve is - 6 dB. This means that

a double pole is present

a pair of complex conjugate poles is present

either a double pole or a pair of complex conjugate poles is present

either a pole or zero at that frequency is present

⇒ Minimum number of J-K flip-flop needed to construct a

*BCD*counter is

2

3

4

5

⇒ The circuit shown below is the equivalent circuit of which one of the following microwave resonator ty

Butterfly resonator

Parallel-wire resonator

Cavity resonator

Coaxial line resonator