engineering recuitment BHEL Engineer Trainee Mock Test 2025 Signals and Systems Introduction To Signals and Systems Classification of Signals
सिग्नल \(x(t)=\rm cos\ {\left( 2t+\frac{\pi}{4}\right)}\) की मौलिक अवधि निर्धारित करें।
1
π s
2
2π s
3
\(\dfrac{\pi}{4}\ s\)
4
\(\dfrac{\pi}{2}\ s\)