Mock Test: SSC JE (ME)- 2
100 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Mock Test: SSC JE (ME)- 2
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Match the List-I (Terms) with List-II (Description) and select the correct answer:
Select the correct statement among the given statements?
Two blocks which are at different states are brought into contact with each other and allowedto reach a final state of thermal equilibrium. The temperature is specified by the
A piston-cylinder device with air at an initial temperature of 30°C undergoes an expansion process for which pressure and volume are related as given below:
The work done by the system for n = 1.4 will be
The network output for the cycle 1-2-3-4-5-6- 1 shown in figure is
The point that connects the saturated liquid line to the saturated vapour line is called
The heating of a gas at constant pressure is governed by
A process, in which the working substance neither receives nor gives out heat to its surroundingsduring its expansion or compression, is called
If in the equation pvn = C. the value of n = γ , then the process is called
Correct Answer :- A
Explanation : In an adiabatic process, the system is insulated from the surroundings and heat absorbed or released is zero. For an adiabatic process of an ideal gas,
pvγ = c is an adiabatic process.
The coefficient of performance of a domestic refrigerator is
The thermodynamic cycle used in aircraft refrigeration is
When there is leakage of ammonia refrigerant, the sulphur stick gives
This is considered as the first link in transmitting the gas forces to the output shaft
Which aspect is not valid for a fire tube locomotive boiler?
Match List-I (Type of boiler) with List-II (Features) and select the correct answer using
the codes given below the lists:
The mass number of a substance represents the sum of total number of
The must commonly used moderator in nuclear power plant is
The number of water level indicators in a boiler are generally ......... in number.
A safety valve usually employed with stationary boilers is
Match List I (Physical properties of fluid) with List II (Dimensions/definitions) and select the
correct answer using the codes given below the list
Fluid is a substance which offers no resistance to change of
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The pressure measured with the help of a pressure gauge is called
The discharge over a suppresed sharp crested rectangular weir is given by
Here H1 is the difference in elevation between
The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select thecorrect statement.
The loss of head at entrance in a pipe is where v =Velocity of liquid in the pipe
A compound pipe of diameter d1, d2, and d3 having length l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by
The loss of head due to viscosity for laminar flow in pipes is
where d = Diameter of pipe
l = Length of pipe
v = Velocity of the liquid in the pipe
μ = Viscosity of the liquid and
w = Specific weight of the flowing
liquid
Select the proper sequence
1. Proportional limit
2. Elastic limit
3. Yielding
4. Failure
A member having length L, cross sectional area A and modulus of elasticity E is subjected to an
axial load W. The strain energy stored in this member is
The state of stresses on an element is a s shown in following figure.
The state of stress at a point in a loaded member is shown in figure below. The magnitude ofmaximum shear stress is
The ratio of linear stress to the linear strain is called
A simply supported beam with a gradually varying load from zero at B and w per unit length at A is shown fig. The shear force at B is equal to
When a closely -coiled helical spring of mean diameter (D) is subjected to an axial load (W),
the deflection of the spring (δ) is given by
where d = Diameter of spring wire.
n =No. of turns of the spring, and
C = Modulus of rigidity for the spring
material.
A thin spherical shell of diameter (d) and thickness (t) is subjected to an internal pressure (P). The volumetric strain is
Which of the following is not exactly a property of material?
A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is
Crushing resistance required to crush the rivet per pitch length is
The locus of instantaneous center of a moving body relative to a fixed body is known as the
The amount of energy absorbed by a flywheel is determined form the
A point on a connecting link (excluding end points) of a double slider crank mechanismtrances a
The cam follower generally used in automobile engines is
Most commonly used materials cast by using cold-chamber die casting include
When machining a hard and brittle metal like cast iron, the type of chips produced is
A milling cutter has the following number of cutting edges.
Match the List-I (Unconventional machining method) with List-II (Medium used):
The operation of cutting of a flat sheet to the desired shape is called
An oxidising process used for aluminium and magnesium articles is called
The enlarging of an existing circular hole with a rotating single point tool is called
The soft grade grinding wheels are denoted by the letters
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