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GATE2017252
X bullocks and Y tractors take $8$ days to plough a field. If we have the number of bullocks and double the number of tractors, it takes $5$ days to plough the same field. How many days will it take X bullocks alone to plough the field? $30$ $35$ $40$ $45$
answered
16 hours
ago
in
Others
by
shubham841
(
140
points)
gate20172
0
votes
0
answers
ISRO201711
A beam is fixed at one end and is vertically supported at the other end. What is the degree of statistical indeterminacy? $1$ $2$ $3$ $4$
edited
2 days
ago
in
Engineering Mechanics
by
jothee
(
100
points)
isro20171
0
votes
0
answers
ISRO20091
A hydraulic press has a ram of $15 \: cm$ diameter and plunger of $1.5 \: cm$. It is required to lift a mass of $1000 \: kg$. The force required on plunger is nearly equal to $100 \: N$ $1000 \: N$ $10000 \: N$ $10 \: N$
edited
2 days
ago
in
Fluid Mechanics
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20092
If the stream function is given by $\Psi=3xy$, then the velocity at a point $(2,3)$ will be $7.21 \: \text{unit}$ $18 \: \text{unit}$ $10.82 \: \text{unit}$ $54 \: \text{unit}$
edited
2 days
ago
in
Fluid Mechanics
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20093
The correct sequence of the centrifugal pump components through which the fluid flows is Impeller, Suction pipe, Foot valve and strainer, Delivery pipe Foot valve and strainer, Suction pipe, Impeller, Delivery pipe Impeller, Suction pipe, Delivery pipe, Foot valve and strainer Suction pipe, Delivery pipe, Impeller, Foot valve and strainer
edited
2 days
ago
in
Applications
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20094
The relation ${p^{V}}^{\gamma}$= constant, where $\gamma$ is the ratio of the specific heats of ideal gad=s, is applicable o Any adiabatic process Only reversible adiabatic process Only irreversible adiabatic process Only isothermal process
edited
2 days
ago
in
Heat Transfer
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20095
Across a normal shock Static pressure and the static temperature rise entropy remains constant velocity and static pressure decrease density and temperature decrease
edited
2 days
ago
in
Fluid Mechanics
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20096
A necessary percaution in selection of pumps for parallel operations is that HQ characteristics of both should be identical Both pumps should be centrifugal type Both pumps should be identical' There should not be change from positive to negative slope in HQ curve
edited
2 days
ago
in
Applications
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20098
The pressure drop for a relatively low Reynolds number flow in a $600 \: mm, \: 30 \: m$ long pipeline is $70 \: kPa$. What is the wall shear stress? $0 \: Pa$ $1400 \: Pa$ $700 \: Pa$ $350 \: Pa$
edited
2 days
ago
in
Fluid Mechanics
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20097
A metallic cube of side $10 \: cm$, density $6.8 \: gm/cc$ is floating in liquid mercury (density $13.6 \: gm/cc$), with $5 \: cm$ height of cube exposed above the mercury level. Water (density $1 \: gm/cc$) is filled over this, to submerge the cube fully. The new height of cube exposed above mercury level is $4.6 \: cm$ $5.4 \: cm$ $5.0 \: cm$ $5.8 \: cm$
edited
2 days
ago
in
Fluid Mechanics
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO20099
The radiative heat transfer rate per unit area $(W/m2)$ between two plane parallel grey surfaces (emissivity $0.9$) maintained at $400 \: K$ and $300 \: K$ is (Stefan Bottzman constant $\sigma=5.67 \times 10^{6} W/m^2K^4$) $1020$ $464$ $812$ $567$
edited
2 days
ago
in
Heat Transfer
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO200910
At the eye tip of a centrifugal impeller, blade velocity is $200 \: m/s$ while the uniform axial velocity at the inlet is $150 \: m/s$. If the sonic velocity is $300 \: m/s$, then the inlet Mach number of the flow will be $0.75$ $0.66$ $0.90$ $0.83$
edited
2 days
ago
in
Applications
by
jothee
(
100
points)
isro2009
0
votes
0
answers
ISRO200911
The transition Reynolds number for flow over a flat plate is $5^*10^5$. What is the distance from the leading edge at which transition will occur for flow of water with a uniform velocity of $1 \: m/s$? (For water, the kinematic viscosity $v=0.86^*10^{6} \:m^2/s$) $0.43 \: m$ $1 \: m$ $43 \: m$ $103 \: m$
edited
2 days
ago
in
Fluid Mechanics
by
jothee
(
100
points)
isro2009
0
votes
0
answers
GATE2019155
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 ________
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019154
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. However, each ...
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019153
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 ________
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019152
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 ______
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019151
The value of the following definite integral is ______ (round off to three decimal places) $\int_1^e (x \: \ln \: x) dx$
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019150
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 ... both the cases, the isentropic efficiency of the turbine at the pressure ratio of $5$ is _______ (round off to two decimal places)
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019149
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 heater ... the turbine as a percentage of the total mass flow rate at the int=let to the turbine at state $1$ is _______
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019148
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. $(R=8.314 \: J/mol \cdot K)$
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019147
Three slabs are joined together as shown in the figure. There is no thermal contact resistance at the interfaces. The center slab experiences a nonuniform 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 ______$^{\circ} C$.
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019146
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 loquid needs to be poured into the container for the cube to just lift up is ____$mm$.
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019145
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 velocity ... fluid, $\mu_1$, then the velocity at the interface (round off to two decimal places) is _______ $m/s$.
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019144
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 ___________
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019143
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 $A$ and another spring of stiffness $k_2=100 \: N/m$ ... the disk. For small disturbance from the equilibrium, the natural frequency of vibration of the system is _____ $rad/s$ (round off to oe decimal place).
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019142
At a critial 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 cmponents 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)
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019141
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 crosshead 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 ______$\%$
edited
2 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019139
Consider an elastic straight beam of length $L= 10 \pi \: m$, with square crosssection 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 circle ... $R$. Assuming that EulerBernoulli beam theory is applicable to this bending problem, the maximum tensile bending stress in the bent beam is _____ $MPa$.
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019138
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 ______
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019137
Match the following sand mold casting defects with their respective causes. ... $P3, Q4, R2, S1$ $P2, Q4, R1, S3$ $P3, Q4, R1, S2$
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019136
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 $65.01$ $65.12$ $64.95$ $65.10$
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019135
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 $0.3 \: mm$ ... solution, the shear strength of the material is closest to $722 \: MPa$ $920 \: MPa$ $200 \: MPa$ $875 \: MPa$
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019134
A planestrain compression (forgoing) 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) criterion. ... $340 \: MPa$ (compressive) $340 \: MPa$ (tensile) $260 \: MPa$ (compressive) $260 \: MPa$ (tensile)
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019133
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 $27^{\circ}$ with a volume flow rate of $51 \: kW$, the exit temperature of the gas is (Assume constant pressure, ... $32^{\circ} C$ $37^{\circ} C$ $53^{\circ} C$ $76^{\circ} C$
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019140
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 crosssection 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 _______$K$.
edited
3 days
ago
in
Others
by
jothee
(
100
points)
gate20191
numericalanswers
0
votes
0
answers
GATE2019132
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 steady ... 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
edited
6 days
ago
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Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019131
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 ... and the nose goes down $162.9 \: N \cdot m$ and the nose goes up $162.9 \: N \cdot m$ and the nose goes down
edited
6 days
ago
in
Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019130
In a four bar planar mechanism shown in the figure, $AB= 5 \: cm, AD=4 \: cm $ and $DC=2 \: cm$. In the configuration shown, both AB and DC are perpendicular to AD. The bar AB rotates with an angular velocity of $10 \: rad/s$. The magnitude of angular velocity (in rad/s) of bar DC at this instant is $0$ $10$ $15$ $25$
edited
6 days
ago
in
Others
by
jothee
(
100
points)
gate20191
0
votes
0
answers
GATE2019129
A car having weight $W$ is moving in the direction as shown in the figure. The center of gravity (CG) of the car is located at height $h$ from the ground, midway between the front and rear wheels. The distance between real and front wheel is $l$. The acceleration of the car is $a$, and ... $R_f=R_r = \frac{W}{2}+\frac{W}{g} \big( \frac{h}{l} \big) a$
edited
6 days
ago
in
Others
by
jothee
(
100
points)
gate20191
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