Match the List-I (Terms) with List-II (Description) and select the correct answer:
Select the correct statement among the given statements?
The fundamental unit of enthalpy is
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 28º C undergoes an expansionprocess for which pressure and volume are related as given below:
What is the work done by the system?
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 condition for a reversible cyclic process is
The main cause for the irreversibility is
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
Carbon dioxide is
The heat rejection factor (HRF) is given by
This is considered as the first link in transmitting the gas forces to the output shaft
Piston compression rings are made of
For the same compression ratio and heat rejection
The most preferred type of carburettor is
The phenomenon of pre-ignition
The first nuclear power plant in India was located at
The primary fuel used in nuclear power plants is
Hard coke is used in
Which aspect is not valid for a fire tube locomotive boiler?
Fusible plug is fitted in a boiler to
The basic purpose of boiler drum is to
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
An economiser is installed in a boiler primarily to
A perfect fluid is
Surface tension is due to
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
Normal depth in open channel flow is
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The hydraulic jump results when
The equation of motion for a viscous fluid known as
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
Young's modulus is defined as the ratio of
Flow stress corresponds to
Select the proper sequence
1. Proportional limit
2. Elastic limit
3. Yielding
4. Failure
Creep is the gradual increase of
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
The point of contra flexure is a point where
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
The rate of change of displacement of a body is called
The law of motion involved in the recoil of gun is
The motion of a wheel of a car is
The wheels of a moving car possess
Which of the following is not exactly a property of material?
consider the following figure and match the following
Resistance to fatigue of a material is measured by
The bending stress in a curved beam is
Stress concentration is caused due to
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
A universal joint is an example of
The product of diametral pitch and circular pitch is
The amount of energy absorbed by a flywheel is determined form the
The condition of isochronisms can be realized in a
A point on a connecting link (excluding end points) of a double slider crank mechanismtrances a
Which of the following statement is wrong?
An exact straight line motion mechanism is a
The contact ratio is given by
The cam follower generally used in automobile engines is
Most commonly used materials cast by using cold-chamber die casting include
The casting defect caused by the erosion of sand
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.
Oxyacetylene flame cuts metal by its
Match the List-I (Unconventional machining method) with List-II (Medium used):
In a centrifugal casting method
The operation of cutting of a flat sheet to the desired shape is called
Spot welding is used for welding
Thermit welding is often used in
Neutral flame is use to weld
An oxidising process used for aluminium and magnesium articles is called
Drilling is an example of
A twist drill is a
Twist drills are made of
The enlarging of an existing circular hole with a rotating single point tool is called
The operation performed on a shaper is
The operation performed on a shaper is
The hardness of a grinding wheels is specified by
The soft grade grinding wheels are denoted by the letters
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