Question is ⇒ Which one of the following statements is wrong. The radar cross-section of a target?, Options are ⇒ (A) depends on frequency, (B) may be reduced by special coating of non-spherical target, (C) depends on the aspect of target if it is non-spherical, (D) is equal to actual cross-sectional area for small targets, (E) , Leave your comments or Download question paper.

Question is ⇒ Which one of the following statements is wrong. The radar cross-section of a target?, Options are ⇒ (A) depends on frequency, (B) may be reduced by special coating of non-spherical target, (C) depends on the aspect of target if it is non-spherical, (D) is equal to actual cross-sectional area for small targets, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Which one of the following statements is wrong. The radar cross-section of a target?
A.	depends on frequency [Wrong Answer]
B.	may be reduced by special coating of non-spherical target [Wrong Answer]
C.	depends on the aspect of target if it is non-spherical [Wrong Answer]
D.	is equal to actual cross-sectional area for small targets [Correct Answer]
View Answer 1 -1 Explanation:- Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Consider the following statements, SWR of a transmission line is infinite when the load is

a short circuit
a complex impedance
an open circuit
a pure reactance

Which of the above statements are correct?
1 and 3 only
1, 2, 3
2, 3, 4
1, 2, 4

⇒ The passage of current in an electrolyte is due to the movement of
electrons
molecules
atoms
ions

⇒ The storage capacity of DSDD disk and DSHD disk are
1.2 MB each
360 KB each
1.2 MB and 360 KB respectively
360 KB and 1.2 MB respectively

⇒ A coil of resistance R and inductance L has a capacitor C in parallel with it. The source frequency is adjusted to a value equal to resonant frequency. Another capacitor C is added in parallel with the above circuit, the source current will
increase
decrease
remain the same
may increase or decrease

⇒ The voltage and current distributions on a grounded λ/4 dipole (Marconi antenna) are similar to those of a half wave dipole in space.
TRUE
FALSE

⇒ When the channel is noisy, producing a conditional probability of error p = 0.5; the channel capacity and entropy function would be, respectively,
1 and 1
1 and 0.5
0.5 and 1
0 and 1

⇒ A FET is a better clapper than a BJT because it has
lower off-set voltage
higher series ON resistance
lower input current
higher input impedance

⇒ Fortran 77, C and Pascal are high level languages.
TRUE
FALSE

⇒ The ratio of the directivity of an end fire antenna to that of a broadside antenna is
2
3
4
5

⇒ The circuit shown in the figure has 4 boxes each described by inputs P, Q, R and outputs Y, Z
4 bit adder giving P + Q
4 bit subtractor giving P - Q
4 bit subtractor giving Q - P
4 bit adder giving P + Q + R

⇒ Inverters find applications in
HVDC transmission
UPS
variable speed ac drives
all of the above

⇒ The sum of positive real functions
is a positive real function
may be a positive real function or not
can not be a positive real function
either (b) or (c)

⇒ A signal g(t) = A then g(t) is a
energy signal
power signal
neither energy nor power signal
insufficient data

⇒ For a BJT a = 0.98, then β =
0.02
0.5
4.9
48

⇒ The most important set of specifications of transformer oil include
dielectric strength and viscosity
dielectric strength and flash point
viscosity and flash point
flash point and viscosity

⇒ In floating point representation decimal number 13.5 is
1101.1
1.1011 x 2³
0.11011 x 2⁴
11.011 x 2²

⇒

Assertion (A): Stubs, directional couplers and baluns are very commonly used in communication systems

Reason (R): Characteristic impedance of a line is an important parameter.

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 but R is wrong
A is wrong but R is correct

⇒ The inductance of a single layer solenoid of 10 turns is 5 μH. Which one of the following is the correct value of inductance when the number of turns is 20 and the length is doubled.
10 μH
20 μH
40 μH
5 μH

⇒ A compiler is a software programme which
change high level Programming language into low level machine language
change the program into binary form
assembles the program
executes the program

⇒ When a ferromagnetic substance is magnetised there are small changes in dimensions. This phenomenon is called
hysteresis
magnetostriction
diamagnetism
dipolar relaxation

⇒

Assertion (A): A VMOS can handle much larger current than other field effect transistors.

Reason (R): In a VMOS the conducting channel is very narrow.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true

⇒ Due to which of the following reasons, the ground wave eventually disappears, as one moves away from the transmitter?
Tilting
Loss of line-of-eight conditions
Interference from the sky wave
Maximum single hop distance limitation

⇒ The Boolean expression Y = (A + B + AB) C then Y will be equal to
AC
BC
C
none

⇒

Assertion (A): The reverse saturation current in a semiconductor diode is 4nA at 20°C and 32 nA at 50°C.

Reason (R): The reverse saturation current in a semiconductor diode doubles for every 10°C rise in temperature.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true

⇒ If transmitted power is 10 kW, the field strength at a distance d is 50 mV/m. If transmitted power is reduced to 2.5 kW, the field strength at the same point will be
25 mV/m
12.5 mV/m
6.25 mV/m
3.125 mV/m

⇒ The slew rate of an ideal op-amp is
very slow
slow
fast
infinitely fast

⇒ Initially the number decimal 8 is stored. If instruction RAL is executed twice, the final number stored will be
decimals 8
decimal 16
decimal 32
decimal 2

⇒ Both OR and AND gates can have only two inputs.
TRUE
FALSE

⇒ The loss of charge method can be used to measure
resistance of shunt
insulation resistance of cable
resistance of shunt winding
both (b) and (c)

⇒ A single mode fibre not suffer from which type of dispersion?
Waveguide dispersion
Material dispersion
Intermodal dispersion
Polarization mode dispersion