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GATE Mock Test for Mechanical Engineering (ME) Paper
GATE Mock Test for Mechanical Engineering (ME) – Students can avail the free online mock test for GATE 2015 here. Practice for the Graduate Aptitude Test in Engineering by taking GATE mock tests. Given here is the practice test for mechanical engineering students. GATE Mock Test aims to give you hands on experience of the online GATE exam. Also you can analyze your preparation and enhance your test taking skills.
Details of GATE 2015 Mock Test for ME: The test contains questions based on syllabus of GATE 2015 of mechanical engineering. Graduate Aptitude Test in Engineering ME paper will contain two sections. The first section is GA (General Aptitude) that is of 15 marks.
To take the General Aptitude Test for GATE, please go to GATE Mock Test – General Aptitude.
GATE Mock Test given here consists of subject specific questions. Please note the details carefully before starting the test.
|1 mark questions||25|
|2 mark questions||30|
|Total time||152 minutes|
|Types of questions||MCQ, and Numerical answer type|
Please note –
- In the actual GATE mechanical engineering test, total marks will be 85 (subject specific) + 15 (GA) marks.
- There will be 65 questions in the actual GATE exam.
- Total time for GATE 2015 ME actual exam will be 180 minutes.
- In the actual GATE test, negative marking will also be applicable. For the sake of practice, negative marking is not there in the GATE 2015 Mock Test.
Procedure for answering a multiple choice (MCQ) type question
- Choose one answer from the 4 options (A,B,C,D) given below the question, click on the bubble placed before the chosen option.
To answer a numerical answer type question, please keep in mind the following instructions:
- A fraction (e.g. -0.3 or -.3) can be entered as an answer with or without ‘0’ before the decimal point. As many as four decimal points, e.g. 12.5435 or 0.003 or -932.6711 or 12.82 can be entered.
Disclaimer: The GATE Mock Tests 2015 are only for the purpose of practice. Students can get familiarized with an online test pattern using the Mock Tests for GATE. Despite practicing any number of online tests at various places, students must read the instructions carefully during the GATE exam. Pattern of questions and marking scheme can be different in the actual GATE test.
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Question 1 of 55
Question 2 of 55
Question 3 of 55
The argument of the complex number 1 + i / 1 – i, where i = √-1, is
Question 4 of 55
Question 5 of 55
Question 6 of 55
A circular rod of length ‘L’ and area of cross-section ‘A’ has a modulus of elasticity ‘E’ and coefficient of thermal expansion ‘α’. One end of the rod is fixed and other end is free. If the
temperature of the rod is increased by ΔT, then
Question 7 of 55
A metallic rod of 500 mm length and 50 mm diameter, when subjected to a tensile force of 100 kN at the ends, experiences an increase in its length by 0.5 mm and a reduction in its diameter by
0.015 mm. The Poisson’s ratio of the rod material is __________
Question 8 of 55
Critical damping is the
Question 9 of 55
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
Question 10 of 55
For the given statements:
- Mating spur gear teeth is an example of higher pair
- A revolute joint is an example of lower pair
Indicate the correct answer
Question 11 of 55
A rigid link PQ is 2 m long and oriented at 20° to the horizontal as shown in the figure. The magnitude and direction of velocity VQ, and the direction of velocity VP are given. The magnitude of VP (in m/s) at this instant is
Question 12 of 55
Biot number signifies the ratio of
Question 13 of 55
The maximum theoretical work obtainable, when a system interacts to equilibrium with a reference environment, is called
Question 14 of 55
Consider a two-dimensional laminar flow over a long cylinder as shown in the figure below.
The free stream velocity is U∞ and the free stream temperature T∞ is lower than the cylinder surface temperature Ts. The local heat transfer coefficient is minimum at point
Question 15 of 55
For a completely submerged body with centre of gravity ‘G’ and centre of buoyancy ‘B’, the condition of stability will be
Question 16 of 55
In a power plant, water (density = 1000 kg/m3) is pumped from 80 kPa to 3 MPa. The pump has an isentropic efficiency of 0.85. Assuming that the temperature of the water remains the same, the specific work (in kJ/kg) supplied to the pump is
Question 17 of 55
Which one of the following is a CFC refrigerant?
Question 18 of 55
The jobs arrive at a facility, for service, in a random manner. The probability distribution of number of arrivals of jobs in a fixed time interval is
Question 19 of 55
In exponential smoothing method, which one of the following is true?
Question 20 of 55
For machining a rectangular island represented by coordinates P(0,0), Q(100,0), R(100,50) and S(0,50) on a casting using CNC milling machine, an end mill with a diameter of 16 mm is used. The trajectory of the cutter centre to machine the island PQRS is
Question 21 of 55
Which one of the following instruments is widely used to check and calibrate geometric features of machine tools during their assembly?
Question 22 of 55
The major difficulty during welding of aluminium is due to its
Question 23 of 55
The main cutting force acting on a tool during the turning (orthogonal cutting) operation of a metal is 400 N. The turning was performed using 2 mm depth of cut and 0.1 mm/rev feed rate. The
specific cutting pressure (in N/mm2) is
Question 24 of 55
The process of reheating the martensitic steel to reduce its brittleness without any significant loss in its hardness is
Question 25 of 55
In solid-state welding, the contamination layers between the surfaces to be welded are removed by
Question 26 of 55
Question 27 of 55
If y = f(x) is the e solution of (d2y/dx2) = 0 with the boundary conditions y = 5 at t x = 0, and (dy/dx) = 2 at x = 10, f(15) = _______
Question 28 of 55
In the following table, x is a discrete random variable and p(x) is the probability density. The standard deviation of x is
x 1 2 3 p(x) 0.3 0.6 0.1
Question 29 of 55
Question 30 of 55
The state of stress at a point is given by σx = −6 MPa, σy = 4 MPa, and τxy = −8 MPa. The maximum tensile stress (in MPa) at the point is
Question 31 of 55
A block R of mass 100 kg is placed on a block S of mass 150 kg as shown in the figure. Block R is tied to the wall by a massless and inextensible string PQ. If the coefficient of static friction for all surfaces is 0.4, the minimum force F (in kN) needed to move the block S is
Question 32 of 55
A pair of spur gears with module 5 mm and a center distance of 450 mm is used for a speed reduction of 5:1. The number of teeth on pinion is
Question 33 of 55
Consider a cantilever beam, having negligible mass and uniform flexural rigidity, with length 0.01 m. The frequency of vibration of the beam, with a 0.5 kg mass attached at the free tip, is 100 Hz. The flexural rigidity (in N.m2) of the beam is
Question 34 of 55
An ideal water jet with volume flow rate of 0.05 m3/s strikes a flat plate placed normal to its path and exerts a force of 1000 N. Considering the density of water as 1000 kg/m3, the diameter (in mm) of the water jet is
Question 35 of 55
A block weighing 200 N is in contact with a level plane whose coefficients of static and kinetic friction are 0.4 and 0.2, respectively. The block is acted upon by a horizontal force (in newton) P=10t, where t denotes the time in seconds. The velocity (in m/s) of the block attained after 10 seconds is
Question 36 of 55
A slider crank mechanism has slider mass of 10 kg, stroke of 0.2 m and rotates with a uniform angular velocity of 10 rad/s. The primary inertia forces of the slider are partially balanced by a revolving mass of 6 kg at the crank, placed at a distance equal to crank radius. Neglect the mass of connecting rod and crank. When the crank angle (with respect to slider axis) is 30°, the unbalanced force (in newton) normal to the slider axis is
Question 37 of 55
An offset slider-crank mechanism is shown in the figure at an instant. Conventionally, the Quick Return Ratio (QRR) is considered to be greater than one. The value of QRR is
Question 38 of 55
A rigid uniform rod AB of length L and mass m is hinged at C such that AC = L/3, CB = 2L/3. Ends A and B are supported by springs of spring constant k. The natural frequency of the system is given by
Question 39 of 55
A hydrodynamic journal bearing is subject to 2000 N load at a rotational speed of 2000 rpm. Both bearing bore diameter and length are 40 mm. If radial clearance is 20 µm and bearing is lubricated with an oil having viscosity 0.03 Pa.s, the Sommerfeld number of the bearing is
Question 40 of 55
A 200 mm long, stress free rod at room temperature is held between two immovable rigid walls.
The temperature of the rod is uniformly raised by 250°C. If the Young’s modulus and coefficient of thermal expansion are 200 GPa and 1×10−5 /°C, respectively, the magnitude of the longitudinal stress (in MPa) developed in the rod is
Question 41 of 55
5 kg of water is in saturated liquid state at 2 bar (vf = 0.001061 m3/kg, uf = 504.0 kJ/kg, hf = 505 kJ/kg). Heat is added in a constant pressure process till the temperature of water reaches 400°C (v = 1.5493 m3/kg, u = 2967.0 kJ/kg, h = 3277.0 kJ/kg). The heat added (in kJ) in the process is
Question 42 of 55
Consider one dimensional steady state heat conduction across a wall (as shown in figure below) of thickness 30 mm and thermal conductivity 15 W/m.K. At x = 0, a constant heat flux, q” = 1×105 W/m2 is applied. On the other side of the wall, heat is removed from the wall by convection with a fluid at 25°C and heat transfer coefficient of 250 W/m2.K. The temperature (in °C), at x = 0 is
Question 43 of 55
Water flows through a pipe having an inner radius of 10 mm at the rate of 36 kg/hr at 25°C. The viscosity of water at 25°C is 0.001 kg/m.s. The Reynolds number of the flow is
Question 44 of 55
For a fully developed flow of water in a pipe having diameter 10 cm, velocity 0.1 m/s and kinematic viscosity 10−5 m2/s, the value of Darcy friction factor is
Question 45 of 55
In a simple concentric shaft-bearing arrangement, the lubricant flows in the 2 mm gap between the shaft and the bearing. The flow may be assumed to be a plane Couette flow with zero pressure gradient. The diameter of the shaft is 100 mm and its tangential speed is 10 m/s. The dynamic viscosity of the lubricant is 0.1 kg/m.s. The frictional resisting force (in newton) per 100 mm length of the bearing is
Question 46 of 55
Question 47 of 55
In an air-standard Otto cycle, air is supplied at 0.1 MPa and 308 K. The ratio of the specific heats (γ) and the specific gas constant (R) of air are 1.4 and 288.8 J/kg.K, respectively. If the compression ratio is 8 and the maximum temperature in the cycle is 2660 K, the heat (in kJ/kg) supplied to the engine is
Question 48 of 55
A reversible heat engine receives 2 kJ of heat from a reservoir at 1000 K and a certain amount of heat from a reservoir at 800 K. It rejects 1 kJ of heat to a reservoir at 400 K. The net work output (in kJ) of the cycle is
Question 49 of 55
An ideal reheat Rankine cycle operates between the pressure limits of 10 kPa and 8 MPa, with reheat being done at 4 MPa. The temperature of steam at the inlets of both turbines is 500°C and the enthalpy of steam is 3185 kJ/kg at the exit of the high pressure turbine and 2247 kJ/kg at the exit of low pressure turbine. The enthalpy of water at the exit from the pump is 191 kJ/kg. Use the following table for relevant data.
Disregarding the pump work, the cycle efficiency (in percentage) is
Question 50 of 55
Jobs arrive at a facility at an average rate of 5 in an 8 hour shift. The arrival of the jobs follows Poisson distribution. The average service time of a job on the facility is 40 minutes. The service time follows exponential distribution. Idle time (in hours) at the facility per shift will be
Question 51 of 55
A metal rod of initial length L0 is subjected to a drawing process. The length of the rod at any instant is given by the expression, L(t) = L(1 + t2) , where t is the time in minutes. The true strain rate (in min−1) at the end of one minute is
Question 52 of 55
During pure orthogonal turning operation of a hollow cylindrical pipe, it is found that the thickness of the chip produced is 0.5 mm. The feed given to the zero degree rake angle tool is 0.2 mm/rev. The shear strain produced during the operation is
Question 53 of 55
For the given assembly: 25 H7/g8, match Group A with Group B
Question 54 of 55
f the Taylor’s tool life exponent n is 0.2, and the tool changing time is 1.5 min, then the tool life (in min) for maximum production rate is
Question 55 of 55
An aluminium alloy (density 2600 kg/m3) casting is to be produced. A cylindrical hole of 100 mm diameter and 100 mm length is made in the casting using sand core (density 1600 kg/m3). The net buoyancy force (in newton) acting on the core is