1
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
The solution of the first order differential equation $$\mathop x\limits^ \bullet \left( t \right) = - 3\,x\left( t \right),\,x\left( 0 \right) = {x_0}\,\,\,\,$$ is
A
$$x\left( t \right) = {x_0}\,{e^{ - 3\,t}}$$
B
$$x\left( t \right) = {x_0}\,{e^{ - 3\,}}$$
C
$$x\left( t \right) = {x_0}\,{e^{ - t\,3}}$$
D
$$x\left( t \right) = {x_0}\,{e^{ - t\,}}$$
2
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
A fair coin is tossed $$3$$ times in succession. If the first toss produces a head, then the probability of getting exactly two heads in three tosses is
A
$${1 \over 8}$$
B
$${1 \over 2}$$
C
$${3 \over 8}$$
D
$${3 \over 4}$$
3
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
If $$P$$ and $$Q$$ are two random events, then which of the following is true?
A
Independence of $$P$$ and $$Q$$ implies that probability $$\,\,\left( {P \cap Q} \right) = 0\,\,$$
B
Probability $$\,\,\left( {P \cap Q} \right) \ge \,\,$$ probability $$(P)$$ $$+$$ probability $$(Q)$$
C
If $$P$$ and $$Q$$ are mutually exclusive then they must be independent
D
Probability $$\,\,\left( {P \cap Q} \right) \le \,\,$$ probability $$(P)$$
4
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
The output voltage waveform of a three - phase square-wave inverter contains
A
only even harmonics
B
both odd and even harmonics
C
only odd harmonics
D
only triple harmonics
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