1
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
$${15^ \circ }C$$
2
GATE CE 2006
MCQ (Single Correct Answer)
+1
-0.3
The solution of the differential equation $$\,{x^2}{{dy} \over {dx}} + 2xy - x + 1 = 0\,\,\,$$ given that at $$x=1,$$ $$y=0$$ is
A
$$\,{1 \over 2} - {1 \over x} + {1 \over {2{x^2}}}$$
B
$$\,{1 \over 2} - {1 \over x} - {1 \over {2{x^2}}}$$
C
$${1 \over 2} + {1 \over x} + {1 \over {2{x^2}}}$$
D
$$- {1 \over 2} + {1 \over x} + {1 \over {2{x^2}}}$$
3
GATE CE 2001
MCQ (Single Correct Answer)
+1
-0.3
The number of boundary conditions required to solve the differential equation $$\,\,{{{\partial ^2}\phi } \over {\partial {x^2}}} + {{{\partial ^2}\phi } \over {\partial {y^2}}} = 0\,\,$$ is
A
$$2$$
B
$$0$$
C
$$4$$
D
$$1$$
4
GATE CE 1999
MCQ (Single Correct Answer)
+1
-0.3
If $$c$$ is a constant, then the solution of $${{dy} \over {dx}} = 1 + {y^2}$$ is
A
$$y=sin(x+c)$$
B
$$y=cos(x+c)$$
C
$$y=tan(x+c)$$
D
$$y = {e^x} + c$$
GATE CE Subjects
Construction Material and Management
Geomatics Engineering Or Surveying
Engineering Mechanics
Transportation Engineering
Environmental Engineering
Geotechnical Engineering
Fluid Mechanics and Hydraulic Machines
General Aptitude
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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NDA
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Class 12
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