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If the target area is small compared to wavelength of radar the situation is called | |
A. | resonance region [Wrong Answer] |
B. | Rayleigh region [Correct Answer] |
C. | optical region [Wrong Answer] |
D. | binomial region [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ For the discrete time system of the given fig
y_{k} - 0.5 y_{k}_{ - 1} - 0.25 y_{k}_{ - 2} = u_{k}
y_{k} + 0.5 y_{k}_{ - 1} - 0.25 y_{k}_{ - 2} = u_{k}
y_{k} - 0.5 y_{k}_{ - 1} + 0.25 y_{k}_{ - 2} = u_{k}
y_{k} + 0.5 y_{k}_{ - 1} + 0.25 y_{k}_{ - 2} = u_{k}
⇒ If v(t) = 0 for t < 0 and e^{-at} for t ≥ 0 V(jω) = 1/(a + jω).
TRUE
FALSE
⇒ The ALU carrier out arithmetic and logic operations (OR AND, NOT, etc.) it processes
decimal numbers
binary numbers
hexadecimal numbers
octal numbers
⇒ A voltage wave is v = 50 sin ωt. Its average value calculated over full one cycle is
zero
35.36 V
31.85 V
none of the above
⇒ The no. of FF required and the maximum decimal no. of a MOD-12 counter is
12, 12
4, 11
3, 6
4, 10
⇒ The noise sources shot noise, partition noise and thermal noise are associated with which component
BJT
diode
resistor
capacitor
⇒ The Hall constant in Si bar is given by 5 x 10^{3} cm^{3}/ coulomb, the hole concentration in the bar is given by
10^{5}/cm^{3}
1.25 x 10^{15}/cm^{3}
1.5 x 10^{15}/cm^{3}
1.6 x 10^{15}/cm^{3}
⇒
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 correct R is wrong
A is wrong R is correct
⇒ Typical value of power consumption of TV transmitter is
0.5 kVA
2 kVA
50 kVA
1000 kVA
⇒ Commercial ECL gates use two ground lines and one negative supply to
reduce power consumption
increase fan out
reduce loading effect
eliminate the effect of power line glitches on the biasing circuit
⇒ When P-N junction is in forward bias, by increasing the battery voltage
current through P-N junction reduces
current through P-N junction increases
circuit resistance increases
none of the above
⇒ Two wires A and B have the same cross-section area and are made of the same material. R_{A} = 600 Ω and R_{B} = 100 Ω. The number of times A is longer than B is
6
2
4
5
⇒ Which of the following statement regarding waveguides is incorrect?
At waveguide can be coupled to a coaxial cable
At frequencies below the cut off value the wave progresses across the waveguide after total reflections
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
Waveguides can handle large power at UHF and microwaves
⇒ The Nyquist plot of a stable, transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh
6 dB and 180°
3 dB and 180°
6 dB and 90°
3 dB and 90°
⇒ In a single sideband suppressed carrier AM system, the modulation index is changed from 0 to 1, the power content of the signal
will be quarter
will be doubled
will increase by 50 percent
will increase by 25 percent
⇒ A machine cycle has one clock cycle.
TRUE
FALSE
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
⇒ In the given figure the E and H lines in a coaxial c
The radial lines are E lines and circular lines are H lines
Radial lines are H lines and circular lines are E lines
The directions of E and H lines are wrong
Radial lines may be E and H lines depending an direction of current
⇒
A-3, B-2, C-1
A-1, B-2, C-3
A-1, B-3, C-2
A-2, B-3, C-1
⇒ The saturation current in a semi-conductor diode
depends on forward voltage
depends on reverse voltage
is due to thermally generated minority carriers
none of the above
⇒ Which of the following is the least important consideration while selecting a logic technology?
Power dissipation
Noise immunity
Number of pins
Cost
⇒ The first pulse in a TV remote control is
start pulse
preliminary pulse
either start pulse or preliminary pulse
erase pulse
⇒ The output wave of a cycloconverter consists of a number of segments derived from the input wave.
TRUE
FALSE
⇒ Typical size of digital IC is about
1″ x 1″
2″ x 2″
0.1″ x 0.1″
0.001″ x 0.001″
⇒ If operator 'a' = 1 ∠120° then (1 + a) =
-a
-a^{2}
a
-1
⇒ Denominator polynomial of a transfer function of certain network
stable
oscillatory
unstable
depends on numerator polynomial
⇒ Consider the following features of an instrument
moving iron
moving coil
electrostatic
dynamometer
⇒ The current wave shown in figure is applied by a 0.1 F capacitor at t = 0. At t = 0^{+}, the voltage across capacito
0
4 V
10 V
20 V
⇒ The most important set of specifications of transformer oil includes
dielectric strength and viscosity
dielectric strength and flash point
flash point and viscosity
dielectric strength, flash point and viscosity
⇒ For the circuit of figure the input and output Miller resistances
5 kΩ each
1 ohm and 5 kΩ respectively
5 kΩ and 1 ohm respectively
1 ohm each
⇒ For the discrete time system of the given fig
y_{k} - 0.5 y_{k}_{ - 1} - 0.25 y_{k}_{ - 2} = u_{k}
y_{k} + 0.5 y_{k}_{ - 1} - 0.25 y_{k}_{ - 2} = u_{k}
y_{k} - 0.5 y_{k}_{ - 1} + 0.25 y_{k}_{ - 2} = u_{k}
y_{k} + 0.5 y_{k}_{ - 1} + 0.25 y_{k}_{ - 2} = u_{k}
⇒ If v(t) = 0 for t < 0 and e^{-at} for t ≥ 0 V(jω) = 1/(a + jω).
TRUE
FALSE
⇒ The ALU carrier out arithmetic and logic operations (OR AND, NOT, etc.) it processes
decimal numbers
binary numbers
hexadecimal numbers
octal numbers
⇒ A voltage wave is v = 50 sin ωt. Its average value calculated over full one cycle is
zero
35.36 V
31.85 V
none of the above
⇒ The no. of FF required and the maximum decimal no. of a MOD-12 counter is
12, 12
4, 11
3, 6
4, 10
⇒ The noise sources shot noise, partition noise and thermal noise are associated with which component
BJT
diode
resistor
capacitor
⇒ The Hall constant in Si bar is given by 5 x 10^{3} cm^{3}/ coulomb, the hole concentration in the bar is given by
10^{5}/cm^{3}
1.25 x 10^{15}/cm^{3}
1.5 x 10^{15}/cm^{3}
1.6 x 10^{15}/cm^{3}
⇒
Assertion (A): In 8085 when RESET OUT goes low processing begins.
Reason (R): CPU remains reset till RESET IN signal goes high.
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 correct R is wrong
A is wrong R is correct
⇒ Typical value of power consumption of TV transmitter is
0.5 kVA
2 kVA
50 kVA
1000 kVA
⇒ Commercial ECL gates use two ground lines and one negative supply to
reduce power consumption
increase fan out
reduce loading effect
eliminate the effect of power line glitches on the biasing circuit
⇒ When P-N junction is in forward bias, by increasing the battery voltage
current through P-N junction reduces
current through P-N junction increases
circuit resistance increases
none of the above
⇒ Two wires A and B have the same cross-section area and are made of the same material. R_{A} = 600 Ω and R_{B} = 100 Ω. The number of times A is longer than B is
6
2
4
5
⇒ Which of the following statement regarding waveguides is incorrect?
At waveguide can be coupled to a coaxial cable
At frequencies below the cut off value the wave progresses across the waveguide after total reflections
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
Waveguides can handle large power at UHF and microwaves
⇒ The Nyquist plot of a stable, transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh
6 dB and 180°
3 dB and 180°
6 dB and 90°
3 dB and 90°
⇒ In a single sideband suppressed carrier AM system, the modulation index is changed from 0 to 1, the power content of the signal
will be quarter
will be doubled
will increase by 50 percent
will increase by 25 percent
⇒ A machine cycle has one clock cycle.
TRUE
FALSE
⇒
Assertion (A): When an electron is revolving in its orbit and magnetic field is also present, the angular frequency of electron will be affected by the magnetic field.
Reason (R): In the case of electron revolving in its orbit in the presence of magnetic field, the orbital magnetic dipole moment is not affected by the presence of magnetic field.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
⇒ In the given figure the E and H lines in a coaxial c
The radial lines are E lines and circular lines are H lines
Radial lines are H lines and circular lines are E lines
The directions of E and H lines are wrong
Radial lines may be E and H lines depending an direction of current
⇒
Match the following:
List I (Operator) | List II (Description) | ||
---|---|---|---|
A. | ? : | 1. | Modulus |
B. | [ ] | 2. | Array expression |
C. | % | 3. | Conditional |
A-3, B-2, C-1
A-1, B-2, C-3
A-1, B-3, C-2
A-2, B-3, C-1
⇒ The saturation current in a semi-conductor diode
depends on forward voltage
depends on reverse voltage
is due to thermally generated minority carriers
none of the above
⇒ Which of the following is the least important consideration while selecting a logic technology?
Power dissipation
Noise immunity
Number of pins
Cost
⇒ The first pulse in a TV remote control is
start pulse
preliminary pulse
either start pulse or preliminary pulse
erase pulse
⇒ The output wave of a cycloconverter consists of a number of segments derived from the input wave.
TRUE
FALSE
⇒ Typical size of digital IC is about
1″ x 1″
2″ x 2″
0.1″ x 0.1″
0.001″ x 0.001″
⇒ If operator 'a' = 1 ∠120° then (1 + a) =
-a
-a^{2}
a
-1
⇒ Denominator polynomial of a transfer function of certain network
stable
oscillatory
unstable
depends on numerator polynomial
⇒ Consider the following features of an instrument
- suitable for both ac and dc
- free from hysteresis and eddy current errors
- No waveform and frequency errors
- it is essentially a voltmeter
moving iron
moving coil
electrostatic
dynamometer
⇒ The current wave shown in figure is applied by a 0.1 F capacitor at t = 0. At t = 0^{+}, the voltage across capacito
0
4 V
10 V
20 V
⇒ The most important set of specifications of transformer oil includes
dielectric strength and viscosity
dielectric strength and flash point
flash point and viscosity
dielectric strength, flash point and viscosity
⇒ For the circuit of figure the input and output Miller resistances
5 kΩ each
1 ohm and 5 kΩ respectively
5 kΩ and 1 ohm respectively
1 ohm each