1
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
In a BPSK signal detector, the local oscillator has a fixed phase error of 200. This phase error deteriorates the SNR at the output by a factor of
A
$$\cos {20^0}$$
B
$${\cos ^2}{20^0}$$
C
$$\cos {70^0}$$
D
$${\cos ^2}{70^0}$$
2
GATE ECE 1990
Subjective
+10
-0
A system is characterized by the following state-space equations: GATE ECE 1990 Control Systems - State Space Analysis Question 6 English

a) Find the transfer function of the system

b) Compute the state-transition matrix/p>

a) Solve the state equation for a unit-step input under zero initial conditions

3
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
The transfer function of a simple RC network functioning as a controller is: $${G_c}(s) = {{s + {z_1}} \over {s + {p_1}}}$$

The condition for the RC network to act as a phase lead controller is:

A
$${p_1} < {z_1}$$
B
$${p_1} = 0$$
C
$${p_1} = {z_1}$$
D
$${p_1} > {z_1}$$
4
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
An electromechanical closed-loop control system has the following characteristic equation $$s^3+6Ks^2+\left(K+2\right)s+8\;=\;0$$, where K is the forward gain of the system.The condition for closed loop stability is
A
K = 0.528
B
K = 2
C
K = 0
D
K = -2.258
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12