1
GATE CE 2010
MCQ (Single Correct Answer)
+1
-0.3
The partial differential equation that can be formed from $$z=ax+by+ab$$ has the form $$\,\,\left( {p = {{\partial z} \over {\partial x}},q = {{\partial z} \over {\partial y}}} \right)\,\,$$
A
$$z=px+qy$$
B
$$z=px-qy$$
C
$$z=px+qy+pq$$
D
$$z=qy+pq$$
2
GATE CE 2009
MCQ (Single Correct Answer)
+1
-0.3
Solution of the differential equation $$3y{{dy} \over {dx}} + 2x = 0$$ represents a family of
A
ellipses
B
circle
C
parabolas
D
hyperbolas
3
GATE CE 2007
MCQ (Single Correct Answer)
+1
-0.3
The degree of the differential equation $$\,{{{d^2}x} \over {d{t^2}}} + 2{x^3} = 0\,\,$$ is
A
$$0$$
B
$$1$$
C
$$2$$
D
$$3$$
4
GATE CE 2007
MCQ (Single Correct Answer)
+1
-0.3
A body originally at $${60^ \circ }$$ cools down to $$40$$ in $$15$$ minutes when kept in air at a temperature of $${25^ \circ }$$c. What will be the temperature of the body at the and of $$30$$ minutes?
A
$${35.2^ \circ }C$$
B
$${31.5^ \circ }C$$
C
$${28.7^ \circ }C$$
D
$${15^ \circ }C$$
GATE CE Subjects
Fluid Mechanics and Hydraulic Machines
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