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Which of the following statements about the matched filter in a communication receiver are correct?
| |
A. | 1 and 4 only [Wrong Answer] |
B. | 1 and 2 only [Correct Answer] |
C. | 2, 3 and 4 [Wrong Answer] |
D. | 1, 2 and 4 [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 :
⇒
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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⇒ A second order active bandpass filter can be obtained by cascading LP second order filter having higher cut off frequency f_{OH} with a second order HP filter having lower cut off frequency f_{OL} provided
f_{OL} < f_{OH}
f_{OL} > f_{OH}
f_{OH} = f_{OL}
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⇒ The most commonly used bias in BJT amplifier circuits is
voltage divider bias
emitter bias
collector bias
collector feedback bias
⇒ For 0 < M < 1, the centres of M circle lie to the right of origin.
TRUE
FALSE
⇒ A signal g(t) = A then g(t) is a
energy signal
power signal
neither energy nor power signal
insufficient data
⇒ The phase angle curve of G(jω) H(jω) is drawn by adding the phase angles of individual factors.
TRUE
FALSE
⇒ A 6 MHz channel is used by a digital signalling system initializing four-level signals. The maximum possible transmission rate is
6M bands/s
12M bands/s
6 M bits/s
12M bits/s
⇒ When a series RL circuit is switched on to a dc voltage, the rate of change of current is maximum at t = 0.
TRUE
FALSE
⇒ The zener diode in the rectangular circuit shown in the figure has a zener voltage of 5.8 volts and a zener knee current of 0.5 mA. The maximum load current drawn from this circuit ensuring proper functioning over the input voltage range between 20 and 30 volts
23.7 mA
14.2 mA
13.7 mA
24.2 mA
⇒ The efficiency of a chopper circuit is about
80% or more
around 50%
around 20%
around 5%
⇒ Waveguides are generally used above
20 MHz
100 MHz
200 MHz
1000 MHz
⇒ The drift velocity of electrons and holes is proportional to electric field strength.
TRUE
FALSE
⇒ The circuit in figure has reached steady values with switch open. If switch is closed at t = 0 the voltage across 2 μF capacitance at t = 0^{+zero4 V6 V10 V}
⇒ Final value theorem is used to find
steady state value of system output
initial value of output
transient beaviour of output
none of these
⇒ Least expensive logic
RTL
DTL
TTL
ECL
⇒ If number of information bits is 4, the parity bits in Hamming code are located at bit positions __________ from the LSB.
1, 2, 5
1, 2, 4
1, 2, 3
1, 2
⇒ If Y(s) = 1 + s, the network has
1 Ω resistor and 1 F capacitor in series
1 Ω resistor and 1 F capacitor in parallel
1 Ω resistor and 1 H inductor in series
1 Ω resistor and 1 H inductor in parallel
⇒ Which of these are two state devices?
Lamp
Punched card
Magnetic tape
All of the above
⇒ A transistor amplifier with 85% efficiency is expected to be
class A
class B
class C
class AB
⇒ In a CE amplifier circuit, the output voltage
is very small
is always constant
depends on β
none of the above
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- The positiveness of coefficients of characteristic equation is necessary as well as sufficient condition for stability of first and second order systems.
- The positiveness of coefficients of characteristic equation ensures negativeness of real roots but is not sufficient condition for stability of third and higher order systems.
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⇒ A bridge type single phase cycloconverter changes the frequency f to f/3. Then one half wave of output contains
3 full waves of input
3 half waves of input
6 full waves of input
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⇒ If the drift velocity of holes under a field gradient of 100 V/m in 5 m/s, their mobility (in SI units) is
0.05
0.5
50
500
⇒ A microstrip line has dielectric having relative permittivity ∈_{r}. The effective dielectric constant is
more than ∈_{r}
equal to 1
less than ∈_{r}
either a or b
⇒ In a system using QASK and 4 bits to form a symbol, the required bandwidth is
same as BPSK
half of that in BPSK
one-fourth of that in BPSK
none of the above
⇒ If D is diagonal and F is focal length, lens angle θ is
θ = tan^{-1} (D/F)
θ = 2 tan^{-1} (D/F)
θ = tan^{-1} (D/2F)
θ = 2 tan^{-1} (D/2F)
⇒ A JFET can operate on
enhancement mode only
depletion mode only
both depletion as well as enhancement modes
neither depletion nor enhancement mode
⇒ The slope of log magnitude curve near the cut off frequency is called cut off rate.
TRUE
FALSE
⇒ Stepper motors find applications in
X-Y plotters
numerically controlled machining equipment
printers
all of the above