Mechanical Engineering
2018 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ME 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.
Question 42
Open questionMENAT2 marksNeeds review
A sprinkler shown in the figure rotates about its hinge point in a horizontal plane due to water flow discharged through its two exit nozzles.
The total flow rate Q through the sprinkler is 1 litre/sec and the cross-sectional area of each exit nozzle is 1 cm
. Assuming equal flow rate through both arms and a frictionless hinge, the steady state angular speed of rotation (in rad/s) of the sprinkler is _____ (correct to two decimal places).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 43
Open questionMENAT2 marksNeeds review
A solid block of 2.0 kg mass slides steadily at a velocity V along a vertical wall as shown in the figure below. A thin oil film of thickness h = 0.15 mm provides lubrication between the block and the wall. The surface area of the face of the block in contact with the oil film is 0.04 m
. The velocity distribution within the oil film gap is linear as shown in the figure. Take dynamic viscosity of the oil as
Pa-s and acceleration due to gravity as 10 m/s
. Neglect weight of the oil. The terminal velocity V (in m/s) of the block is ________ (correct to one decimal place). 
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 44
Open questionMENAT2 marksNeeds review
A tank of volume 0.05 m
contains a mixture of saturated water and saturated steam at 200°C. The mass of the liquid present is 8 kg. The entropy (in kJ/kg K) of the mixture is __________ (correct to two decimal places).Property data for saturated steam and water are:
At 200°C,
MPa
m
/kg,
m
/kg
kJ/kg K,
kJ/kg KLog in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer