Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
High IF in a superheat receiver | |
A. | improves selectivity [Wrong Answer] |
B. | increases tracking problems [Correct Answer] |
C. | decreases tracking problems [Wrong Answer] |
D. | reduces adjacent channel rejection [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 :
⇒ TTL is used in electronic calculators.
TRUE
FALSE
⇒ In a Gunn diode oscillator drift velocity of electron is 10^{7} cm/s and active region length is 10 x 10^{-4} cm. The natural frequency of oscillation is
1 MHz
10 MHz
1 GHz
10 GHz
⇒ The minterm designation for ABCD is
m_{8}
m_{10}
m_{14}
m_{15}
⇒ The trigonometric Fourier series for the waveform f(t) shown below con
only cosine terms and zero value for the dc component
only cosine terms and a positive value for the dc component
only cosine terms and a negative value for the dc component
only sine terms and a negative for the dc component
⇒ When a P-N junction is unbiased, the junction current at equilibrium is
zero as no charges cross the junction
zero as equal number of carriers cross the barrier
mainly due to diffusion of majority carriers
mainly due to diffusion of minority carriers
⇒ Which of the following is NOT associated with a p-n junction?
Junction capacitance
Charge Storage Capacitance
Depletion Capacitance
Channel Length Modulation
⇒ Choose correct option for a stable system :
I is true, II is true
I is true, II is false
I is false, II is true
I is false, II is false
⇒ A piece of iron is placed in a magnetic field
the magnetic field will not be affected
the magnetic lines of force will bend to pass through the piece
the magnetic lines of force will bend away from the piece
any of the above depending on type of iron
⇒ The bandwidth required for amplitude modulation is
half the frequency of modulating signal
equal to the frequency of modulating signal
twice the frequency of modulating signal
four times the frequency of modulating signal
⇒ The range of values of a and b for which the linear time invariant system with impulse respon
|a| > 1, |b| > 1
|a| < 1, |b| < 1
|a| < 1, |b| > 1
|a| > 1, |b| < 1
⇒ Thyristors connected in series need static and dynamic stabilizing circuits.
TRUE
FALSE
⇒ If a microcomputer has a 64 K memory; what is the hexadecimal notations for the first memory location?
AAAA
FFFF
AAA0
0
⇒ When a material is in superconducting state and a magnetic field is applied
the superconducting property is not affected
the superconducting property may be affected and resistivity may increase from zero to a low value
the superconducting property may be destroyed
the material may become an insulator
⇒ For the circuit shown in the figure, D has a transition from 0 to 1 after CLK changes from 1 to 0. Assume gate delays to be neglig
Q goes to 1 to the CLK transition and stays at 1
Q goes to 0 at the CLK transition and stays at 10
Q goes to 1 at the CLK transition and goes to 0 when D goes to 1
Q goes to 0 at the CLK transition and goes to 1 when D goes to 1
⇒ Which of the following statements is incorrect?
A mesh with two resistors has two mesh currents
The algebraic sum of all voltages around any mesh or any loop must be zero
The principle node is a function where branch current can divide or combine
A Norton is a series circuit
⇒ The work done in moving a charge Q on an equipotential line for a distance d will be
V/d
QV/d
Q.d
zero
⇒ In steady state condition inductor behave as
open circuit
short circuit
current source
voltage source
⇒ A mod 4 counter will count
from 0 to 4
from 0 to 3
from any number n to n + 4
none of the above
⇒ For a depletion type NMOS, V_{p} = - 4 volts. For V_{GS} = 0, 1_{D} = 16 mA in the pinch off region of V_{DS}. For V_{GS} = - 2, the value of I_{D} in the pinch off region of V_{DS} is given by
64 mA
32 mA
16 mA
4 mA
⇒ A full subtractor has a total of
2 inputs
3 inputs
4 inputs
5 inputs
⇒ Which of the following identifiers is valid in Pascal?
⇒ A long specimen of P type semiconductor material
is + vely charged
is electrically neutral
has an electric field directed along its length
acts as a dipole
⇒ The 10 MHz in the specification of CRO means that
the sweep frequency is 10 MHz
the frequency of input signal should not be more than 10 MHz
the vertical amplifier has been designed for 10 MHz
none of the above
⇒ Which DOS command improves memory usage?
MEM MAKER
MOVE
MEM IM
None on the above
⇒ A transmitted using AM has in modulated carrier output power of 10 KW and can be modulated to a maximum depth of 90% by a sinusoidal modulating voltage without causing overloading. Find the value to which an modulated carrier power can be increased without resulting in overloading if the maximum permitted modulating index is 40%
14 KW
12.96 KW
26.96 KW
2.96 KW
⇒
Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ Probability of error in DPSK is less than PSK
TRUE
FALSE
equal
depend upon noise
⇒ In colour TV receiver, varactor diode is used for
detection
rectification
tuning
both (a) and (b)
⇒
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 R is false
A is false R is true
⇒ An ideal op-amp requires
zero input offset voltage
low input offset voltage
high input offset voltage
infinite input offset voltage
⇒ TTL is used in electronic calculators.
TRUE
FALSE
⇒ In a Gunn diode oscillator drift velocity of electron is 10^{7} cm/s and active region length is 10 x 10^{-4} cm. The natural frequency of oscillation is
1 MHz
10 MHz
1 GHz
10 GHz
⇒ The minterm designation for ABCD is
m_{8}
m_{10}
m_{14}
m_{15}
⇒ The trigonometric Fourier series for the waveform f(t) shown below con
only cosine terms and zero value for the dc component
only cosine terms and a positive value for the dc component
only cosine terms and a negative value for the dc component
only sine terms and a negative for the dc component
⇒ When a P-N junction is unbiased, the junction current at equilibrium is
zero as no charges cross the junction
zero as equal number of carriers cross the barrier
mainly due to diffusion of majority carriers
mainly due to diffusion of minority carriers
⇒ Which of the following is NOT associated with a p-n junction?
Junction capacitance
Charge Storage Capacitance
Depletion Capacitance
Channel Length Modulation
⇒ Choose correct option for a stable system :
- Roots of the characteristic equation of the system are real and negative
- Area within the impulse response is finite
I is true, II is true
I is true, II is false
I is false, II is true
I is false, II is false
⇒ A piece of iron is placed in a magnetic field
the magnetic field will not be affected
the magnetic lines of force will bend to pass through the piece
the magnetic lines of force will bend away from the piece
any of the above depending on type of iron
⇒ The bandwidth required for amplitude modulation is
half the frequency of modulating signal
equal to the frequency of modulating signal
twice the frequency of modulating signal
four times the frequency of modulating signal
⇒ The range of values of a and b for which the linear time invariant system with impulse respon
|a| > 1, |b| > 1
|a| < 1, |b| < 1
|a| < 1, |b| > 1
|a| > 1, |b| < 1
⇒ Thyristors connected in series need static and dynamic stabilizing circuits.
TRUE
FALSE
⇒ If a microcomputer has a 64 K memory; what is the hexadecimal notations for the first memory location?
AAAA
FFFF
AAA0
0
⇒ When a material is in superconducting state and a magnetic field is applied
the superconducting property is not affected
the superconducting property may be affected and resistivity may increase from zero to a low value
the superconducting property may be destroyed
the material may become an insulator
⇒ For the circuit shown in the figure, D has a transition from 0 to 1 after CLK changes from 1 to 0. Assume gate delays to be neglig
Q goes to 1 to the CLK transition and stays at 1
Q goes to 0 at the CLK transition and stays at 10
Q goes to 1 at the CLK transition and goes to 0 when D goes to 1
Q goes to 0 at the CLK transition and goes to 1 when D goes to 1
⇒ Which of the following statements is incorrect?
A mesh with two resistors has two mesh currents
The algebraic sum of all voltages around any mesh or any loop must be zero
The principle node is a function where branch current can divide or combine
A Norton is a series circuit
⇒ The work done in moving a charge Q on an equipotential line for a distance d will be
V/d
QV/d
Q.d
zero
⇒ In steady state condition inductor behave as
open circuit
short circuit
current source
voltage source
⇒ A mod 4 counter will count
from 0 to 4
from 0 to 3
from any number n to n + 4
none of the above
⇒ For a depletion type NMOS, V_{p} = - 4 volts. For V_{GS} = 0, 1_{D} = 16 mA in the pinch off region of V_{DS}. For V_{GS} = - 2, the value of I_{D} in the pinch off region of V_{DS} is given by
64 mA
32 mA
16 mA
4 mA
⇒ A full subtractor has a total of
2 inputs
3 inputs
4 inputs
5 inputs
⇒ Which of the following identifiers is valid in Pascal?
THETA
NUM
1 ST
$ BETA
⇒ A long specimen of P type semiconductor material
is + vely charged
is electrically neutral
has an electric field directed along its length
acts as a dipole
⇒ The 10 MHz in the specification of CRO means that
the sweep frequency is 10 MHz
the frequency of input signal should not be more than 10 MHz
the vertical amplifier has been designed for 10 MHz
none of the above
⇒ Which DOS command improves memory usage?
MEM MAKER
MOVE
MEM IM
None on the above
⇒ A transmitted using AM has in modulated carrier output power of 10 KW and can be modulated to a maximum depth of 90% by a sinusoidal modulating voltage without causing overloading. Find the value to which an modulated carrier power can be increased without resulting in overloading if the maximum permitted modulating index is 40%
14 KW
12.96 KW
26.96 KW
2.96 KW
⇒
Assertion (A): An ac amplifier uses coupling capacitors at input and output
Reason (R): The capacitive reactance varies inversely with frequency. It is infinite for dc
Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ Probability of error in DPSK is less than PSK
TRUE
FALSE
equal
depend upon noise
⇒ In colour TV receiver, varactor diode is used for
detection
rectification
tuning
both (a) and (b)
⇒
Assertion (A): Megger is used to check insulation resistance of cables.
Reason (R): Insulation resistance of cables is very high.
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 R is false
A is false R is true
⇒ An ideal op-amp requires
zero input offset voltage
low input offset voltage
high input offset voltage
infinite input offset voltage