A mass m1 of 100 kg travelling with a uniform velocity of 5 m/s along a line collides with a stationary mass m2 of 1000 kg. After the collision, both the masses travel together with the same velocity. The coefficient of restitution is
In which one of the following is a flywheel generally employed?
3 kg of water initially in saturated liquid state at 2 bar, 25°C[vf = 0.231/m3/kg, uf = 520 kJ/kg, hf = 510 kJ/kg, hg = 2399 kJ/kg]. Heat is added isobarically such that temperature of water raises to 420°C [h = 3385 kJ/kg, u = 2520 kJ/kg, v = 0.058 m3/kg]. Calculate the heat added during the process (in kJ)_______.
Calculation of metacentric height of a floating body involves second moment of area. The axis about which this moment is to be calculated passes though the
A long cylindrical pipe is wrapped with an insulating material. Up to the critical radius of insulation ________.
Given that the peripheral speed of the grinding wheel of 100 mm diameter for cylindrical grinding of a steel workpiece is 30 m/s, what will be the estimated rotational speed of the grinding wheel in revolution per minute (rpm)?
In terms of physical significance, The size of a cam depends upon,
A linear programming problem with mixed constraints (some constraints of ≤ type and some of ≥ type) can be solved by which of the following methods?
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I A. Lubricantion B. Rise of water in trees C. Formation of droplets D. Cavitation Lists-II 1. Capillary 2. Vapour pressure 3. Viscosity 4. Surface tension
Effective length for a column is more under which of the following condition?
The total area under the stress-strain curve of a mild steel specimen tested up to failure under tension is a measure of
The Sommerfeld number is given by __________. Where: r = radius of journal c = radial clearance μ = viscosity of lubricant (N-s/mm2) ns = journal speed (rev/s) p = unit bearing pressure (N/mm2)
Which one of the following statements is correct for the application of fin?
A box of weight 1000 N is placed on the ground. The coefficient of friction between the box and the ground is 0.5. When the box is pulled by a 100 N horizontal force, the frictional force developed between the box and the ground at impending motion is
On a particular day, the atmospheric air was found to have dry bulb temperature of 30oC and wet bulb temperature of 18oC. The barometric pressure was observed to be 756mm of Hg and partial pressure of water vapour as 9.62 mm Hg. Find the specific humidity in gm/kg of dry air.
Match List-I (Type of Gears) with List-II (characteristics) and select the correct answer using the code given below the lists: List-I A) Helical gearing B) Herringbone gearing C) Worm gearing D) Hypoid gearing List-II 1) Zero axial thrust 2) Non-inter-changeable 3) Skew shafts 4) Parallel shafts
What is the correct sequence of operations in powder metallurgy?
A closely coiled helical spring is cut into two equal parts. What will be the ratio of the deflection of any of the resulting spring to the deflection of the original spring for the same load?
For the given epicyclic gear train if the Gear A is fixed and Arm C makes 20 revolutions, the number of revolutions made by Gear B will be ________.
The velocity component in x and y direction are given by u= λxy-xy2 ; v= x2y – 4y3 , the value of λ for the point(1,1) when the flow is possible and fluid is incompressible?
Fluidity of liquid metal in a spiral test can be increased by
If young’s modulus of elasticity of a material is 140 GPa and Bulk modulus is 70 GPa, what will be the Poisson’s ratio (μ)?
A circular object of radius r rolls without slipping on a horizontal level floor with the center having velocity V. The velocity at the point of contact between the object and the floor is
For the same friction lining material and applied load, what will be the ratio of torque carrying capacity calculated using Uniform pressure theory and Uniform wear theory if clutch plates are solid ( Ri = 0) _________.
A motion is aperiodic at what value of the damping factor______?
Consider the following statements: in an epicyclic gear train with 96 and 36 number of teeth on the annulus and sun respectively 1) Planet must have 30 teeth 2) There must be 3 or 4 planets around the circumference 3) Planets can never be input or output links 4) Module of the sun should be more than the rest Which of these statements are correct?
In ASA system, if 10 – 8 – 6 – 6 – 10 – 12 - 2 mm, then principle cutting edge angles is
The coupling used to connect two shafts with large angular misalignment is____.
The maximum theoretical work obtainable, when a system interacts to equilibrium with a reference environment, is called __________.
What are the forces that influence the problem of fluid statics ?
Which one of the given responses would be the meaningful order of the following words?
1) Consultations 2) Illness 3) Doctor 4) Treatment 5) Recovery
In the following question, select the missing number from the given alternatives.
17, 32, 60, 114, 220, ?
In the following figure, rectangle represents Web designers, circle represents Equestrians, triangle represents Poets and square represents Joggers. Which set of letters represents joggers who are both Equestrians as well as Poets?
Pritam got more marks than Krishna who got less marks than Anuj. Anuj got less marks than Pritam. Rishi got less marks than Krishna but more marks than Khusbu then who got second highest marks?
In the following question, select the related number from the given alternatives. 42 : 14 : : 56 : ?
In the following question, select the related word from the given alternatives.
Happy : Sad :: Benevolent : ?
In the following question, select the odd letters from the given alternatives.
Arrange the given words in the sequence in which they occur in the dictionary.