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Recent questions tagged gateme-2019-set1
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GATE2019 ME-1: 31
The rotor of a turbojet engine of an aircraft has a mass $180 \: kg$ and polar moment of inertia $10 \: kg \cdot m^2$ about the rotor axis. The rotor rotates at a constant speed of $1100 \: rad/s$ in the clockwise direction when viewed from the front of the aircraft. The ... the nose goes down $162.9 \: N \cdot m$ and the nose goes up $162.9 \: N \cdot m$ and the nose goes down
Arjun
asked
in
Applications
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
fluid-mechanics-and-thermal-science
applications
turbomachinary
0
answers
0
votes
GATE2019 ME-1: 32
The wall of a constant diameter pipe of length $1 \: m$ is heated uniformly with flux $q''$ by wrapping a heater coil around it. The flow at the inlet to the pipe is hydrodynamically fully developed. The fluid is incompressible and the flow is assumed to be laminar and ... the location P, Q and R, the flow is thermally developed at P, Q and R P and Q only Q and R only R only
Arjun
asked
in
Fluid Mechanics
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
fluid-mechanics-and-thermal-science
fluid-mechanics
flow-through-pipes
0
answers
0
votes
GATE2019 ME-1: 33
A gas is heated in a duct as it flows over a resistance heater. Consider a $101 \: kW$ electric heating system. The gas enters the heating section of the duct at $100 \: kPa$ and $27^{\circ} C$ with a volume flow rate of $15 m^3/s$. If heat is lost from the gas in the duct to the ... $32^{\circ} C$ $37^{\circ} C$ $53^{\circ} C$ $76^{\circ} C$
Arjun
asked
in
Thermodynamics
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
fluid-mechanics-and-thermal-science
thermodynamics
0
answers
0
votes
GATE2019 ME-1: 34
A plane-strain compression (forging) of a block is shown in the figure. The strain in the $z$-direction is zero. The yield strength $(S_y)$ in uniaxial tension/compression of the material of the block is $300 \: MPa$ and it follows the Tresca (maximum shear stress) ... $340 \: MPa$ (compressive) $340 \: MPa$ (tensile) $260 \: MPa$ (compressive) $260 \: MPa$ (tensile)
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
applied-mechanics-and-design
mechanics-of-materials
stress-strain
0
answers
0
votes
GATE2019 ME-1: 35
In orthogonal turning of a cylindrical tube of wall thickness $5 \: mm$, the axial and the tangential cutting forces were measured as $1259 \: N$ and $1601 \:N$, respectively. The measured chip thickness after machining was found to be $0.3 \: mm$. The rake angle was ... solution, the shear strength of the material is closest to $722 \: MPa$ $920 \: MPa$ $200 \: MPa$ $875 \: MPa$
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
0
answers
0
votes
GATE2019 ME-1: 36
A circular shaft having diameter $65.00_{-0.05}^{+0.01} \: mm$ is manufactured by turning process. A $50 \: \mu m$ thick coating of TiN is deposited on the shaft. Allowed variation in TiN film thickness is $\pm 5 \mu m$. The minimum hole diameter (in mm) to just provide clearance fit is $65.01$ $65.12$ $64.95$ $65.10$
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
0
answers
0
votes
GATE2019 ME-1: 37
Match the following sand mold casting defects with their respective causes. ... $P-3, Q-4, R-2, S-1$ $P-2, Q-4, R-1, S-3$ $P-3, Q-4, R-1, S-2$
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
0
answers
0
votes
GATE2019 ME-1: 38
A truss is composed of members AB, BC, CD, AD and BD, as shown in the figure. A vertical load of $10 \: kN$ is applied at point D. The magnitude of force (in kN) in the member BC is __________
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
applied-mechanics-and-design
engineering-mechanics
trusses
0
answers
0
votes
GATE2019 ME-1: 39
Consider an elastic straight beam of length $L= 10 \pi \: m$, with square cross-section of side $a=5 \: mm$, and Young's modulus $E=200 \: GPa$. This straight beam was bent in such a way that the two ends meets, to form a ... $MPa$.
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
applied-mechanics-and-design
mechanics-of-materials
deflection-of-beams
0
answers
0
votes
GATE2019 ME-1: 40
Consider a prismatic straight beam of length $L=\pi \: m$, pinned at the two ends as shown in the figure. The beam has a square cross-section of side $p=6 \: mm$. The Young’s modulus $E=200 \: GPa$, and the coefficient of thermal expansion $\alpha = 3 \times 10^{-6} K^{-1}$. The minimum temperature rise required to cause Euler buckling of the beam is _______$K$.
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
applied-mechanics-and-design
mechanics-of-materials
deflection-of-beams
0
answers
0
votes
GATE2019 ME-1: 41
In a UTM experiment, a sample of length $100 \: mm$, was loaded in tension until failure. The failure load was $40 \: kN$. The displacement, measured using the cross-head motion, at failure, was $15 \: mm$. The compliance of the UTM is constant and is given $5 \times 10^{-8} \: m/N$. The strain at failure in the sample is ______$\%$
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
applied-mechanics-and-design
mechanics-of-materials
stress-strain
0
answers
0
votes
GATE2019 ME-1: 42
At a critical point in a component, the state of stress is given as $\sigma_{xx}=100 \: MPa, \: \sigma_{yy}=220 \: MPa, \: \sigma_{xy}= \sigma_{yx} = 80 \: MPa$ and all other stress components are zero. The yield strength of the material is $468 \: MPa$ The factor of safety on the basis of maximum shear stress theory is ___________ (round off to one decimal place)
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
applied-mechanics-and-design
mechanics-of-materials
0
answers
0
votes
GATE2019 ME-1: 43
A uniform thin disk of mass $1 \: kg$ and radius $0.1 \: m$ is kept on a surface as shown in the figure. A spring of stiffness $k_1=400 \: N/m$ is connected to the disk center $A$ ... disk. For small disturbance from the equilibrium, the natural frequency of vibration of the system is _________ $rad/s$ (round off to oe decimal place).
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
applied-mechanics-and-design
vibrations
0
answers
0
votes
GATE2019 ME-1: 44
A single block brake with a short shoe and torque capacity of $250 \: N \cdot m$ is shown. The cylindrical brake drum rotates anticlockwise at $100 \: rpm$ and the coefficient of friction is $0.25$. The value of $a$ in mm (round off to one decimal place), such that the minimum actuating force $P$ is $2000 \: N$, is ___________
Arjun
asked
in
Applied Mechanics and Design
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
applied-mechanics-and-design
machine-design
breaks
0
answers
0
votes
GATE2019 ME-1: 45
Two immiscible, incompressible, viscous fluids having same densities but different viscosities are contained between two infinite horizontal parallel plates, $2 \: m$ apart as shown below. The bottom plate is fixed and the upper plate moves to the right with a constant ... fluid, $\mu_1$, then the velocity at the interface (round off to two decimal places) is _______ $m/s$.
Arjun
asked
in
Fluid Mechanics
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
fluid-mechanics
fluid-mechanics-and-thermal-science
0
answers
0
votes
GATE2019 ME-1: 46
A cube of side $100 \: mm$ is placed at the bottom of an empty container on one of its faces. The density of the material of the cube is $800 \: kg/m^3$. Liquid of density $1000 \: kg/m^3$ is now poured into the container. The minimum height to which the liquid needs to be poured into the container for the cube to just lift up is __________$mm$.
Arjun
asked
in
Fluid Mechanics
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
fluid-mechanics-and-thermal-science
fluid-mechanics
0
answers
0
votes
GATE2019 ME-1: 47
Three slabs are joined together as shown in the figure. There is no thermal contact resistance at the interfaces. The center slab experiences a non-uniform internal heat generation with an average value equal to $10000 \: Wm^{-3}$, while the left and right slabs have no ... $T_1$ is measured to be $100^{\circ} C$, the right extreme face temperature $T_2$ is ______$^{\circ} C$.
Arjun
asked
in
Heat Transfer
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
fluid-mechanics-and-thermal-science
heat-transfer
0
answers
0
votes
GATE2019 ME-1: 48
If one mole of $H_2$ has occupies a rigid container with a capacity of $1000$ litres and the temperature is raised from $27^{\circ} C$ to $37^{\circ} C$, the change in pressure of the contained gas (round off to two decimal places), assuming ideal gas behaviour, is _______ Pa. $(R=8.314 \: J/mol \cdot K)$
Arjun
asked
in
Thermodynamics
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
fluid-mechanics-and-thermal-science
thermodynamics
1
answer
1
vote
GATE2019 ME-1: 49
A steam power cycle with regeneration as shown below on the $T-s$ diagram employs a single open feedwater heater for efficiency improvement. The fluid mix with each other in an open feedwater heater. The turbine is isentropic and the input (bleed) to the feedwater ... from the turbine as a percentage of the total mass flow rate at the inlet to the turbine at state $1$ is _______
Arjun
asked
in
Applications
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
vapour-and-gas-power-cycles
0
answers
0
votes
GATE2019 ME-1: 50
A gas turbine with air as the working fluid has an isentropic efficiency of $0.70$ when operating at a pressure ratio of $3$. Now, the pressure ratio of the turbine is increased to $5$, while maintaining the same inlet conditions. Assume air as a ... the cases, the isentropic efficiency of the turbine at the pressure ratio of $5$ is ___________ (round off to two decimal places)
Arjun
asked
in
Applications
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinary
1
answer
0
votes
GATE2019 ME-1: 51
The value of the following definite integral is __________ (round off to three decimal places) $\int_1^e (x \: \ln \: x) dx$
Arjun
asked
in
Calculus
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
calculus
definite-integrals
0
answers
0
votes
GATE2019 ME-1: 52
In ASA system, the side cutting and end cutting edge angles of a sharp turning tool are $45^{\circ}$ and $10^{\circ}$, respectively. The feed during cylindrical turning is $0.1 \: mm/rev$. The center line average surface roughness (in $\mu m$, round off to one decimal place) of the generated surface is __________
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
0
answers
0
votes
GATE2019 ME-1: 53
Taylor’s tool life equation is given by $VT^n=C$, where $V$ is in $m/min$ and $T$ is in $min$. In a turning operation, two tools $X$ and $Y$ are used. For tool $X$, $n=0.3$ and $C=60$ and for tool $Y$, $n=0.6$ and $C=90$. Both the tools will have the same tool life for the cutting speed (in $m/min$, round off to one decimal place) of ____________
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
materials-manufacturing-and-industrial-engineering
machining-and-machine-tools-operations
tool-life-and-wear
0
answers
0
votes
GATE2019 ME-1: 54
Five jobs $(J1, J2, J3, J4$ and $J5)$ need to be processes in a factory. Each job can be assigned to any of the five different machines $(M1, M2, M3, M4$ and $M5)$. The time durations taken (in minutes) by the machines for each of the jobs, are given in the table. ...
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
materials-manufacturing-and-industrial-engineering
production-planning-and-control
0
answers
0
votes
GATE2019 ME-1: 55
A project consists of six activities. The immediate predecessor of each activity and the estimated duration is also provided in the table below: ... amount of time, the maximum duration (in weeks) of the activity $S$ without delaying the completion of the project is ________
Arjun
asked
in
Materials, Manufacturing and Industrial Engineering
Feb 9, 2019
by
Arjun
27.4k
points
gateme-2019-set1
numerical-answers
materials-manufacturing-and-industrial-engineering
production-planning-and-control
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