Viscocity
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361338 Machine parts are jammed in winter due to

1 Increase in viscosity of lubricant
2 Decrease in viscosity of lubricant
3 Increase in surface tension of lubricant
4 Decrease in surface tension of lubricant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361339 A good lubricant must have

1 High viscosity
2 Low viscosity
3 High density
4 Low surface tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361340 A thin plate of large area \(A\) is placed midway in a gap of height \(h\) filled with oil of viscosity \(\eta_{0}\) and the plate is pulled at constant velocity \(v\) by applying drag force on the plate. If a lighter oil of viscosity \(\eta\) is then substituted in the gap, it is found that for the velocity \(v\), and the same drag force as previous case the plate is located unsymmetrically in the gap but parallel to the walls. Find \(\eta\) in terms of distance from nearer wall to the plane \(y\).
supporting img

1 \(\dfrac{4 \eta_{0} y}{h}\)
2 \(\dfrac{4 \eta_{0} y}{h}\left[1-\dfrac{y}{h}\right]\)
3 \(4 \eta_{0}\left[1-\dfrac{y}{h}\right]\)
4 \(\dfrac{2 \eta_{0} y}{h}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361341 From kinetic theory point of view viscosity represents transport of

1 Momentum
2 Mass
3 Energy
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361342 Which of the following substances has the greatest viscosity?

1 Mercury
2 Water
3 Kerosene
4 Glycerine
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361338 Machine parts are jammed in winter due to

1 Increase in viscosity of lubricant
2 Decrease in viscosity of lubricant
3 Increase in surface tension of lubricant
4 Decrease in surface tension of lubricant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361339 A good lubricant must have

1 High viscosity
2 Low viscosity
3 High density
4 Low surface tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361340 A thin plate of large area \(A\) is placed midway in a gap of height \(h\) filled with oil of viscosity \(\eta_{0}\) and the plate is pulled at constant velocity \(v\) by applying drag force on the plate. If a lighter oil of viscosity \(\eta\) is then substituted in the gap, it is found that for the velocity \(v\), and the same drag force as previous case the plate is located unsymmetrically in the gap but parallel to the walls. Find \(\eta\) in terms of distance from nearer wall to the plane \(y\).
supporting img

1 \(\dfrac{4 \eta_{0} y}{h}\)
2 \(\dfrac{4 \eta_{0} y}{h}\left[1-\dfrac{y}{h}\right]\)
3 \(4 \eta_{0}\left[1-\dfrac{y}{h}\right]\)
4 \(\dfrac{2 \eta_{0} y}{h}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361341 From kinetic theory point of view viscosity represents transport of

1 Momentum
2 Mass
3 Energy
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361342 Which of the following substances has the greatest viscosity?

1 Mercury
2 Water
3 Kerosene
4 Glycerine
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361338 Machine parts are jammed in winter due to

1 Increase in viscosity of lubricant
2 Decrease in viscosity of lubricant
3 Increase in surface tension of lubricant
4 Decrease in surface tension of lubricant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361339 A good lubricant must have

1 High viscosity
2 Low viscosity
3 High density
4 Low surface tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361340 A thin plate of large area \(A\) is placed midway in a gap of height \(h\) filled with oil of viscosity \(\eta_{0}\) and the plate is pulled at constant velocity \(v\) by applying drag force on the plate. If a lighter oil of viscosity \(\eta\) is then substituted in the gap, it is found that for the velocity \(v\), and the same drag force as previous case the plate is located unsymmetrically in the gap but parallel to the walls. Find \(\eta\) in terms of distance from nearer wall to the plane \(y\).
supporting img

1 \(\dfrac{4 \eta_{0} y}{h}\)
2 \(\dfrac{4 \eta_{0} y}{h}\left[1-\dfrac{y}{h}\right]\)
3 \(4 \eta_{0}\left[1-\dfrac{y}{h}\right]\)
4 \(\dfrac{2 \eta_{0} y}{h}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361341 From kinetic theory point of view viscosity represents transport of

1 Momentum
2 Mass
3 Energy
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361342 Which of the following substances has the greatest viscosity?

1 Mercury
2 Water
3 Kerosene
4 Glycerine
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361338 Machine parts are jammed in winter due to

1 Increase in viscosity of lubricant
2 Decrease in viscosity of lubricant
3 Increase in surface tension of lubricant
4 Decrease in surface tension of lubricant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361339 A good lubricant must have

1 High viscosity
2 Low viscosity
3 High density
4 Low surface tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361340 A thin plate of large area \(A\) is placed midway in a gap of height \(h\) filled with oil of viscosity \(\eta_{0}\) and the plate is pulled at constant velocity \(v\) by applying drag force on the plate. If a lighter oil of viscosity \(\eta\) is then substituted in the gap, it is found that for the velocity \(v\), and the same drag force as previous case the plate is located unsymmetrically in the gap but parallel to the walls. Find \(\eta\) in terms of distance from nearer wall to the plane \(y\).
supporting img

1 \(\dfrac{4 \eta_{0} y}{h}\)
2 \(\dfrac{4 \eta_{0} y}{h}\left[1-\dfrac{y}{h}\right]\)
3 \(4 \eta_{0}\left[1-\dfrac{y}{h}\right]\)
4 \(\dfrac{2 \eta_{0} y}{h}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361341 From kinetic theory point of view viscosity represents transport of

1 Momentum
2 Mass
3 Energy
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361342 Which of the following substances has the greatest viscosity?

1 Mercury
2 Water
3 Kerosene
4 Glycerine
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361338 Machine parts are jammed in winter due to

1 Increase in viscosity of lubricant
2 Decrease in viscosity of lubricant
3 Increase in surface tension of lubricant
4 Decrease in surface tension of lubricant
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361339 A good lubricant must have

1 High viscosity
2 Low viscosity
3 High density
4 Low surface tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361340 A thin plate of large area \(A\) is placed midway in a gap of height \(h\) filled with oil of viscosity \(\eta_{0}\) and the plate is pulled at constant velocity \(v\) by applying drag force on the plate. If a lighter oil of viscosity \(\eta\) is then substituted in the gap, it is found that for the velocity \(v\), and the same drag force as previous case the plate is located unsymmetrically in the gap but parallel to the walls. Find \(\eta\) in terms of distance from nearer wall to the plane \(y\).
supporting img

1 \(\dfrac{4 \eta_{0} y}{h}\)
2 \(\dfrac{4 \eta_{0} y}{h}\left[1-\dfrac{y}{h}\right]\)
3 \(4 \eta_{0}\left[1-\dfrac{y}{h}\right]\)
4 \(\dfrac{2 \eta_{0} y}{h}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361341 From kinetic theory point of view viscosity represents transport of

1 Momentum
2 Mass
3 Energy
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361342 Which of the following substances has the greatest viscosity?

1 Mercury
2 Water
3 Kerosene
4 Glycerine