Strength of Materials Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction horizontally vertically at an angle equal to the angle of friction to the inclined plane along the plane horizontally vertically at an angle equal to the angle of friction to the inclined plane along the plane ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The effort required to lift a load W on a screw jack with helix angle a and angle of friction<="" div=""> Wcos(a + ) Wsin(a + <(>) Wtan(a + <)>) Wtan(a-<)>) Wcos(a + ) Wsin(a + <(>) Wtan(a + <)>) Wtan(a-<)>) ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be 10 kg, + ve sense 20 kg, + ve sense 20 kg, - ve sense 10 kg, - ve sense 10 kg, + ve sense 20 kg, + ve sense 20 kg, - ve sense 10 kg, - ve sense ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials A number of forces acting at a point will be in equilibrium if Sum of resolved parts in any two perpendicular directions are both zero All of them are inclined equally Their total sum is zero Two resolved parts in two directions at right angles are equal Sum of resolved parts in any two perpendicular directions are both zero All of them are inclined equally Their total sum is zero Two resolved parts in two directions at right angles are equal ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to 50 25 100 250 50 25 100 250 ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The center of gravity of a uniform lamina lies at All of these the center of heavy portion the bottom surface the mid point of its axis All of these the center of heavy portion the bottom surface the mid point of its axis ANSWER DOWNLOAD EXAMIANS APP
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