Question is ⇒ In a radio receiver the input from local oscillator is fed to, Options are ⇒ (A) RF amplifier, (B) mixer, (C) IF amplifier, (D) detector, (E) , Leave your comments or Download question paper.

Question is ⇒ In a radio receiver the input from local oscillator is fed to, Options are ⇒ (A) RF amplifier, (B) mixer, (C) IF amplifier, (D) detector, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	In a radio receiver the input from local oscillator is fed to
A.	RF amplifier [Wrong Answer]
B.	mixer [Correct Answer]
C.	IF amplifier [Wrong Answer]
D.	detector [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : B 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 :

⇒ Which of the following elements act as donor impurities?

Gold
Phosphorus
Boron
Antimony
Arsenic
Indium

Select the answer using the following codes :
1, 2 and 3
1, 2, 4, and 6
3, 4, 5 and 6
2, 4 and 5

⇒ The system of the given fi
is unstable for all values of K
is stable for all values of K
can be stable for some values of K
data is insufficient to determine stability

⇒ In which amplifier circuit is gate conductance negligible?
JFET amplifier
MOSFET amplifier
Both JFET and MOSFET amplifier
None of the above

⇒ Which of these is also called 'hot carrier diode'?
PIN diode
LED
Photo diode
Schottky diode

⇒ Which one of the following power amplifier has the maximum efficiency?
Class A
Class B
Class AB
Class C

⇒ A carrier wave carries information.
TRUE
FALSE

⇒ For a MOS capacitor fabricated on a P-type semiconductor, strong inversion occurs when
surface potential is equal to Fermi potential
surface Potential is greater than Fermi potential
surface potential is - ve and equal to Fermi potential in magnitude
surface potential is + ve and equal to twice the Fermi potential

⇒ 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

⇒ The current gain of a bipolar transistor drops at high frequencies because of
transistor capacitance
high current effects in the base
parasitic inductive elements
the early effect

⇒ At resonance, the parallel circuit constituted by an iron-cored coil and a capacitor behaves
open circuit
short circuit
pure resistor of value R
pure resistor of value much higher than R

⇒

Assertion (A): A presettable counter can be preset to any desired starting point

Reason (R): The maximum frequency of a ripple counter depends on the modulus.

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

⇒ In a flash type ADC, employing 15 comparators resolution with 10 volts reference; is expected to be :
0.625 V
0.656 V
0.525 V
insufficient data

⇒ By placing an inverter between both inputs of an S-R flip-flop, the resulting flip-flop becomes
J-K flip-flop
D-flip-flop
T-flip-flop
Master salve JK flip-flop

⇒ In an SSB transmitter one is most likely to find
class C audio amplifier
tuned modulator
class B RF amplifier
class AB power amplifier

⇒ If wave of critical frequency 30 MHz is departing at an angle of 60°, then the MUF is given to be
10 MHz
15 MHz
30 MHz
60 MHz

⇒ If (10)_x x (10)_x = (100)_x; (100)_x x (100)_x = (10000)_x then x can take value :
2
5
10
all of these

⇒ Which has the highest power dissipation per gate?
ECL
TTL
CMOS
PMOS

⇒ In a bridge rectifier circuit the rms value of input ac voltage is 10 V. The PIV across each diode is
7.07 V
14.14 V
10 V
28.28 V

⇒ For formation of state equations, the inductors and current sources
should be in tree
should be in cotree
may be in tree or cotree
should be in both tree and cotree

⇒ A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The current amplification is
2.5
12.5
25
125

⇒ A shadow zone does not receive any space wave
TRUE
FALSE

⇒

Match the following:

	List I (Laws of Boolean)		List II (Relation algebra)
A.	Distributive law	1.	x + x = x
B.	DeMorgans law	2.	x(y + z) = xy + xz
C.	Idempotent law	3.	(x) = x
D.	Involution law	4.	(x + y) = xy

A-1, B-2, C-3, D-4
A-2, B-4, C-1, D-3
A-3, B-4, C-1, D-2
A-4, B-1, C-2, D-3

⇒ The resistance of a metallic wire would
increase as f increase
decrease as f increase
remains the same at all frequencies
increase with f up to a certain frequency and then decrease

⇒ Noise with double-sided power spectral density of K overall frequencies is passed through a RC low pass filter with 3 dB cut-off frequency of f_c. The noise power at the filter output is
K
Kf_c
Kpf_c
∞

⇒ When measuring phase angle between two waves using a CRO, the time base generator is connected to
X plate
Y plate
both X and Y plate
neither X nor Y plates

⇒ If a fuse is higher than required current rating is employed in a circuit, it will
blow more frequently since it carries more current
afford better protection to the circuit
seriously overload the circuit
lead to larger maintenance cost

⇒ The modulation index of a narrowband FM signal is
nearly equal to 0.3
much less than unity
nearly 0.5
much more than unity

⇒ A FM signal with modulation index M_f is passed through a frequency doubler. The wave in the output of the doubler will have modulation index of
M_f
M_f/2
2M_f
UM_f

⇒ 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

⇒ The log magnitude for the system in the given figure is (where T =
20 log (1 + ωT)
-20 log (1 + ωT)
-10 log (1 + ω²T²)
-20 log (1 + ω²T²)