1
GATE PI 2007
MCQ (Single Correct Answer)
+2
-0.6
The $$DC$$ power source for arc welding has the characteristic $$3V + 1 = 240,$$ where $$V=$$ Voltage and $${\rm I}\,\, = $$ current in amp. For maximum arc power at the electrode, voltage should be set at
A
$$20V$$
B
$$40V$$
C
$$60V$$
D
$$80V$$
2
GATE PI 2007
MCQ (Single Correct Answer)
+2
-0.6
The geometric transformation specified by

$$\left[ {x'\,\,y'\,\,1} \right] = \left[ {x\,\,y\,\,1} \right]\left[ {\matrix{ {0.5} & 0 & 0 \cr 0 & {0.25} & 0 \cr 1 & 2 & 1 \cr } } \right]$$ in a $$2D.$$
In a $$2D$$ $$CAD$$ system represents................

A
Scaling and translation
B
Scaling and rotation
C
rotation and translation
D
rotation
3
GATE PI 2007
MCQ (Single Correct Answer)
+2
-0.6
In a $$CAD$$ package, a point $$P(6, 3, 1)$$ is projected along a vector $$v(-2, 1, -1).$$ The projection of this point on $$X-Y$$ plane will be
A
$$(4, 4, 0)$$
B
$$(8, 2, 0)$$
C
$$(7, 4, 0)$$
D
$$(2, 5, 0)$$
4
GATE PI 2007
MCQ (Single Correct Answer)
+1
-0.3
The interpolator in a $$CNC$$ machine controls
A
Spindle speed
B
Coolant flow
C
Feed rate
D
Tool change
EXAM MAP