1
GATE EE 2008
+2
-0.6
Two Sinusoidal signal $$p\left( {{\omega _1}t} \right) = A\,\sin \omega t,$$ and $$q\left( {{\omega _2}t} \right)$$ are applied to $$X$$ and $$Y$$ inputs of a dual channel $$C.R.O,$$ the lissajous figure displayed on the screen is shown below. The signal $$q\left( {{\omega _2}t} \right)$$ will be represented as
A
$$q\left( {{\omega _2}t} \right) = A\,\sin \,{\omega _2}t,{\omega _2} = 2{\omega _1}$$
B
$$q\left( {{\omega _2}t} \right) = A\,\sin \,{\omega _2}t,{\omega _2} = {\raise0.5ex\hbox{\scriptstyle {{\omega _1}}} \kern-0.1em/\kern-0.15em \lower0.25ex\hbox{\scriptstyle 2}}$$
C
$$q\left( {{\omega _2}t} \right) = A\,\cos \,{\omega _2}t,{\omega _2} = 2{\omega _1}$$
D
$$q\left( {{\omega _2}t} \right) = A\,\cos \,{\omega _2}t,{\omega _2} = {\raise0.5ex\hbox{\scriptstyle {{\omega _1}}} \kern-0.1em/\kern-0.15em \lower0.25ex\hbox{\scriptstyle 2}}$$
2
GATE EE 2005
+2
-0.6
The simultaneous application of signals $$x(t)$$ and $$y(t)$$ to the horizontal and vertical plates, respectively, of an oscilloscope, produces a vertical figure-of-$$8$$ display. If $$P$$ and $$Q$$ are constants, and $$x(t)=P$$ $$sin(4t+30),$$ then $$y(t)$$ is equal to
A
$$Q\,\sin \left( {4t - 30} \right)$$
B
$$Q\,\sin \left( {2t + 15} \right)$$
C
$$Q\,\sin \left( {8t + 60} \right)$$
D
$$Q\,\sin \left( {4t + 30} \right)$$
3
GATE EE 2004
+2
-0.6
A $$CRO$$ probe has an impedance of $$500k\Omega$$ in parallel with a capacitance of $$10pF$$. The probe is used to measure the voltage between $$P$$ and $$Q$$ as shown in Fig. The measured voltage will be
A
$$3.53$$$$V$$
B
$$4.37V$$
C
$$4.54V$$
D
$$5.00V$$
4
GATE EE 2003
+2
-0.6
List $$-$$ $${\rm I}$$ represents the figures obtained on a $$CRO$$ screen when the voltage signals $$\,{V_X}\,\, = \,\,{V_{Xm}}\sin \,\,\omega t\,\,$$ and $$V_y^ \cdot \,\, = \,\,{V_{ym}}\sin \,\,\left( {\omega t + \Phi } \right)\,\,$$ are given to its $$X$$ and $$Y$$ plates respectively and $$\Phi$$ is changed. Choose the correct value of $$\Phi$$ from List $$-$$ $${\rm I}$$ to match with the corresponding figure of List $$-$$ $${\rm II}$$.
A
$$A = 1,\,B = 3,\,\,C = 6,\,\,D = 5$$
B
$$A = 2,\,B = 6,\,\,C = 4,\,\,D = 5$$
C
$$A = 2,\,B = 3,\,\,C = 5,\,\,D = 4$$
D
$$A = 1,\,B = 5,\,\,C = 6,\,\,D = 4$$
EXAM MAP
Medical
NEET