Question is ⇒ Consider the following statements regarding phase sensitive detector <ol style="list-style-type: decimal; padding-bottom:10px;"><li style="padding-top:10px;">The detector reads zero when phases of input signal and reference signal are different.</li><li style="padding-top:10px;">The detector acts as a linear rectifier.</li><li style="padding-top:10px;">The detector can be used as vector voltmeter.</li></ol> Of the above statements which are correct?, Options are ⇒ (A) 1, 2, 3, (B) 1 and 2, (C) 2 and 3, (D) 1 and 3, (E) , Leave your comments or Download question paper.

Question is ⇒ Consider the following statements regarding phase sensitive detector <ol style="list-style-type: decimal; padding-bottom:10px;"><li style="padding-top:10px;">The detector reads zero when phases of input signal and reference signal are different.</li><li style="padding-top:10px;">The detector acts as a linear rectifier.</li><li style="padding-top:10px;">The detector can be used as vector voltmeter.</li></ol> Of the above statements which are correct?, Options are ⇒ (A) 1, 2, 3, (B) 1 and 2, (C) 2 and 3, (D) 1 and 3, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Consider the following statements regarding phase sensitive detector The detector reads zero when phases of input signal and reference signal are different. The detector acts as a linear rectifier. The detector can be used as vector voltmeter. Of the above statements which are correct?
A.	1, 2, 3 [Wrong Answer]
B.	1 and 2 [Wrong Answer]
C.	2 and 3 [Correct Answer]
D.	1 and 3 [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : C 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 :

⇒ In 8085 microprocessor, even after a Reset operation which of the following interrupts remains enabled?
INTR
RST 5.5
RST 7.5
TRAP

⇒ In EPROM integrated dose is defined as
UV light intensity x exposure time in seconds
UV light intensity / exposure time in seconds
exposure time in seconds / UV light intensity
none of the above

⇒ Which of the following microphones is the cheapest?
Moving coil
Condenser
Ribbon
Carbon

⇒ The purpose of incorporating a pre-selector stage in a receiver is to
provide higher selectivity
provide higher fidelity
improve linearity
larger passband

⇒ When a unit step voltage drives a lag network the output
remains constant at unit step value
increases exponentially from zero to final value
decreases exponentially from 1 to 0
either (b) of (c) depending on values of R and C

⇒ Which camera tube has highest dark current?
Plumbicon
Vidicon
Saticon
GCD imager

⇒ Wienbridge oscillator uses
-ve feedback
+ve feedback
both +ve, -ve feedback
feedback is not required

⇒ For a high pass filter attenuation = 0 at f = 0.
TRUE
FALSE

⇒ A MASER is a
low noise device
high noise device
medium noise device
may be either high or medium noise device

⇒ 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

⇒

Assertion (A): Most of actual systems are non-linear.

Reason (R): Non linearity may be due to saturation, dead zone, square law etc.

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
R is correct but A is wrong

⇒ The open wired circuit in the given figure works
EX - NOR gate
AND gate
XOR gate
NOR gate

⇒ Given figure shows the magnitude plot for a system. The steady state error for unit step inpu
1/101
1/100
14977
14611

⇒ The storage capacity of audio CD is 540 Mb per side.
TRUE
FALSE

⇒ In a series RLC circuit for lower frequency power factor is ________
leading, Lagging
lagging, Leading
independent of frequency
same

⇒ The domain mode in rectangular waveguide is
TE₀₁
TE₀₂
TE₁₀
TM₁₁

⇒ Accumulator is an 8 bit register and is also known as register B.
TRUE
FALSE

⇒ A 3 stage Johnson counter shown in figure is clocked at a constant frequency of f_c from the starting state of Q₀ Q₁ Q₂ = 101. The frequency of output Q₀ Q₁ Q₂ wil
f_c/2
f_c/3
f_c/6
f_c/8

⇒ The process of deliberately adding impurity to a semi-conductor material is called
impurification
pollution
deionisation
doping

⇒ Which of the following is not the main characteristic of a FET?
Drain resistance
Forward transconductance
Temperature stability
Amplification factor

⇒ Half wave sysmmetry means f(t) = - f(t ± T/2).
TRUE
FALSE

⇒ Occasionally a discrete amplifier user RF chokes instead of collector resistors. Such amplifiers are inherently
low pass amplifiers
high pass amplifiers
band pass amplifiers
none of the above

⇒ When a lead acid battery is being charged, the specific gravity of the electrolyte
decreases
increases
either increases or decreases
remains the same

⇒ In an FM signal, the power
increases as the modulation index increases
reduces as the modulation index increase
increases as the modulation index decreases
remains constant when the modulation index increases

⇒ Which of the following expressions is true for apparent power in an A.C. circuit?
VI cos Φ
V_av x I_av
V_r.m.s x I_r.m.s
V_peak x I_peak

⇒ A voltage wave v = 10 + 20 sin ωt + 7.5 sin 3 ω(t) is applied to a series combination of two elements. The current is i = 5 sin (ωt + 20°) + 1.5 sin (3ωt + 10°). The elements are
R and C
R and L
L and C
both inductances

⇒ Am equivalent 2's complement representation of the 2's complement number 1101 is
110100
1101
110111
111101

⇒ A pulse function having magnitude E and duration from t = 0 to t = a can be represented as
sum of two pulse functions
difference of two pulse functions
difference of two step functions each of magnitude E and one originating at t = 0 and the other at t = a
none of the above

⇒ The feedback resistance r_d in small signal model of MOSFET is of the order of
1000 MΩ
1 MΩ
1 KΩ
100 Ω

⇒ A line of characteristic impedance 400 Ω is terminated by a resistance of 400 Ω. The reflected quantities are
zero
equal to incident quantities
half the incident quantities
double the incident quantities