Question:medium

The quadrature null effect of the coherent detector occur at

Show Hint

Quadrature null occurs when \[ \cos\phi=0 \] i.e. \[ \phi=\pm90^\circ. \]

Updated On: Jun 25, 2026

\(\phi=0\)
\(\phi=\pm\frac{\pi}{2}\)
\(\phi=\pm\pi\)
\(\phi=2\pi\)

Show Solution

The Correct Option is B

Solution and Explanation

Was this answer helpful?

0

Top Questions on Control Systems

If the number of zeros is less than the number of poles, i.e. \( Z<P \), then the value of the transfer function becomes zero for \( s \to \infty \). Hence, some zeros are located at infinity and the order of such zeros will be:
- CUET (PG) - 2025
- Electronics Engineering
- Control Systems
View Solution
In the root locus plot, the breakaway points
A. Need not always be on the real axis alone.
B. Must lie on the root loci.
C. Must lie between 0 and -1.
Choose the correct answer from the options given below:
- CUET (PG) - 2025
- Electronics Engineering
- Control Systems
View Solution
The value of the steady state error for first order system, \(\frac{1}{sT+1}\) with Unit Ramp Function will be
- CUET (PG) - 2025
- Electronics Engineering
- Control Systems
View Solution
Which one of the following statements regarding the effect of the phase lead network is not correct?
- CUET (PG) - 2025
- Electronics Engineering
- Control Systems
View Solution
Want to practice more? Try solving extra ecology questions todayView All Questions

Questions Asked in TS PGECET exam

The Eigenvalues of \(3\times 3\) real matrix A are 1, 2, 3 then \(A^{-1} =\)

TS PGECET - 2026
Linear Algebra

Let \(A=\begin{bmatrix} 1 & 1 & 0 \\ 0 & 1 & 1 \\ 0 & 0 & 1 \end{bmatrix}\). If \(u_1\) and \(u_2\) are column matrices such that \(Au_1 = \begin{bmatrix} 2 \\ 1 \\ 0 \end{bmatrix}\) and \(Au_2 = \begin{bmatrix} 1 \\ 0 \\ 1 \end{bmatrix}\), then \(u_1 - u_2\) is

TS PGECET - 2026
Matrices

Let \(a,b\) and \(c\) be real numbers. Suppose there exist real numbers \(x,y,z\) which are not all zero such that the system of equations \(x = cy + bz\), \(y = cx + az\) and \(z = bx + ay\) has a non-zero solution then \(\left(a+b+c\right)^2 =\)

TS PGECET - 2026
Determinants

For the function \(f(x)=\log x\), the number \(c\) strictly between \(e^2\) and \(e^3\) that satisfies \(f'(c)=\dfrac{f(e^3)-f(e^2)}{e^3-e^2}\) is

TS PGECET - 2026
Calculus