951. The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be_________________?
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A. same in both cases

B. 2 times more

C. 3 times more

D. 4 times more

E. unpredictable

952. The term N.T.P. stands for________________________?
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A. natural temperature and pressure

B. normal thermodynamic pressure

C. nominal temperature and pressure

D. normal temperature and pressure

E. normal thermodynamic practice

953. Which of the following is the property of a system___________________?
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A. all of the above

B. internal energy

C. enthalpy and entropy

D. pressure and temperature

E. volume and density

954. Which law states that the internal energy of a gas is a function of temperature__________________?
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A. Charles law

B. Boyles law

C. Joules law

D. there is no such law

E. Regnaults law

955. Zeroth law of thermodynamics________________?
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A. deals with conversion of mass and energy

B. deals with reversibility and irreversibility of process

C. states that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other

D. deals with heat engines

E. does not exist

956. The unit of mass in S.I. units is ____________________?
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A. gram

B. newton

C. tonne

D. quintal

E. kilogram
957. According to first law of thermodynamics__________________?
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A. total energy of a system remains constant

B. entropy of a system remains constant

C. total internal energy of a system during a process remains constant

D. internal energy, enthalpy and entropy during a process remain constant

E. work done by a system is equal to heat transferred by the system

958. The ideal efficiency of a Brayton cycle without regeneration with increase ni pressure ratio will_________________?
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A. increase/decrease depending on application

B. remain unchanged

C. increase

D. decrease

E. unpredictable

959. The number of links and instantaneous centers in a reciprocating engine mechanism are ___________________?
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A. 5, 4

B. 6, 4

C. 4, 6

D. 4, 4

E. 4, 5

960. In a Carnot cycle, heat is transferred at_______________________?
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A. constant enthaply

B. constant temperature

C. constant volume

D. constant pressure

E. any one of the above

961. If a load W is applied instantaneously on a bar; then the stress induced in bar will___________________?
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A. increase with increase in y

B. depend on other considerations

C. none of the above

D. be independent of ratio of mass of load W to mass of bar (y)

E. decrease with decrease in y

962. Stress concentration in cyclic loading is____________________?
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A. ch is correct statement ?

B. very serious in brittle materials and less serious in ductile materials

C. very serious in ductile materials and less serious in brittle materials

D. equally serious in both types of materials

E. seriousness would depend on other factors

F. none of the above

963. Gas turbine cycle consists of___________________?
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A. two isentropics, one constant volume and one constant pressure

B. two isothermals and two isentropics

C. two isentropics and two constant pressures

D. none of the above

E. two isentropics and two constant volumes

964. Stress concentration in cyclic loading is more serious in__________________?
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A. ductile materials

B. brittle materials

C. equally serious in both cases

D. depends on other factors

E. unpredictable

965. Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?
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A. Charles Law

B. there is no such law

C. Boyles Law

D. Regnaults Law

E. Joules Law

966. The ratio of two specific heats of air is equal to____________________?
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A. 2.71

B. 0.1

C. 0.17

D. 1.41

E. 0.24

967. Intensive property of a system is one whose value____________________?
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A. is dependent on the path followed and not on the state

B. remains constant

C. is not dependent on the path followed but on the state

D. depends on the mass of the system, like volume

E. does not depend on the mass of the system, like temperature, pressure, etc
968. The main disadvantage of the sliding pair is that it is_________________?
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A. difficult to manufacture

B. A. and C. above

C. bulky

D. A. and B. above

E. wears rapidly

969. In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by_________________?
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A. decreasing the cross-section area of bar

B. increasing the cross-section area of bar

C. none of the above

D. remain unaffected with cross-section area

E. would depend upon other factors

970. Brittle coating technique is used for_________________?
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A. protecting metal against corrosion

B. determining brittleness

C. experimental stress analysis

D. protecting metal against wear and tear

E. non-destructive testing of metals

971. Which of the following variables controls the physical properties of a perfect gas_________________?
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A. volume

B. atomic mass

C. temperature

D. pressure

E. all of the above
972. Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?
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A. temperature

B. pressure

C. entropy

D. volume

E. internal energy

973. Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant_______________?
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A. internal energy

B. entropy

C. volume

D. pressure

E. temperature

974. For same compression ratio and for same heat added_________________?
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A. Otto cycle is more efficient than Diesel cycle

B. Diesel cycle is more efficient than Otto cycle

C. efficiency depends on other factors

D. both Otto and Diesel cycles are equally efficient

E. none of the above

975. Kleins construction can be used to determine acceleration of various parts when the crank is at_________________?
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A. inner dead centre

B. at 45 to the line of the stroke

C. right angles to the link of the stroke

D. all of the above

E. outer dead centre

976. For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?
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A. water

B. saturated steam

C. superheated steam

D. perfect gas

E. any gas

977. The pressureof a gas in terms of its mean kinetic energy per unit volume E is equal to________________?
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A. 5E/4

B. 2E/3

C. 3E/4

D. E/2

E. E/3

978. The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that___________________?
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A. rankine cycle is hypothetical

B. a rankine cycle receives heat at two places

C. carnot cycle cant work with saturated steam

D. none of the above

E. heat is supplied to water at temperature below the maximum temperature of the cycle
979. Kinetic theory of gases assumes that the collisions between the molecules are________________?
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A. perfectly inelastic

B. partly inelastic

C. partly elastic and partly inelastic

D. perfectly elastic

E. partly elastic

980. If the opposite links of a four bar linkage are equal, the links will always form a_________________?
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A. trapezoid

B. rectangle

C. pentagon

D. triangle

E. parallelogram
981. On weight basis, air contains following parts of oxygen_________________?
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A. 21

B. 73

C. 79

D. 25

E. 23
982. An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is___________________?
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A. possible, but with lot of sophistications

B. feasible

C. desirable

D. impossible

E. possible

983. Change in enthalpy of a system is the heat supplied at___________________?
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A. N.T.P. condition

B. constant temperature

C. constant volume

D. constant pressure

E. constant entropy

984. Characteristic gas constant of a gas is equal to______________________?
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A. Cv/Cp

B. Cp + Cv

C. Cp x Cv

D. Cp Cv

E. C/Cv

985. Kinematic pairs are those which have___________________?
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A. two elements having Coroilis com-ponent

B. two elements having relative motion

C. minimum of two instantaneous centres

D. all of the above

E. two elements held together mechani-cally

986. The unit of temperature in S.I. units is _________________?
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A. Centigrade

B. Fahrenheit

C. Rankine

D. Kelvin

E. Celsius

987. For the same lift and same angle of ascent, a smaller base circle will give_______________?
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A. something else

B. a small value of pressure angle

C. none of the above is true

D. there is no such relation with pressure angle

E. a large value of pressure angle
988. Angle of descent of cam is defined as the angle__________________?
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A. moved by the cam from beginning of ascent to the termination of descent

B. of rotation of the cam for a definite displacement of the follower

C. moved by the cam from the instant the follower begins to rise, till it reaches its highest position

D. during which the follower returns to its initial position

E. through which the cam rotates during the period in which the follower remains in the highest position

989. If a material fails below its yield point, failure would be due to___________________?
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A. sudden loading

B. straining

C. impact loading

D. creep

E. fatigue
990. The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as_________________?
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A. Rankine cycle

B. Stirling cycle

C. Dual combustion cycle

D. Diesel cycle

E. Atkinson cycle
991. Work done in an adiabatic process between a given pair of end states depends on__________________?
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A. particular adiabatic process

B. the value of heattransferred

C. the end states only

D. the value of index n

E. mass of the system

992. Minimum work in compressor is possible when the value of adiabatic index n is equal to_________________?
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A. 1.27

B. 0.75

C. 1.35

D. 1

E. 2

993. Two systems shall be dynamically equivalent when____________________?
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A. the mass of two are same

B. none of the above

C. e.g. of two coincides

D. all of the above

E. M.I. of two about an axis through e.g. is equal

994. On volume basis, air contains following parts of oxygen _____________________?
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A. 21

B. 79

C. 23

D. 77

E. 25

995. Rankines theory of failure is applicable for following type of materials___________________?
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A. ductile

B. plastic

C. brittle

D. elastic

E. tough

996. According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?
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A. volume, if temperature is kept constant

B. temperature

C. remains constant,if volume and temperature are kept constant

D. absolute

E. absolute temperature, if volume is kept constant
997. The pressure angle of a cam depends upon___________________?
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A. angle of ascent

B. offset between centre lines of cam and follower

C. sum of radii of base circle and roller follower

D. lift of follower

E. all of the above
998. Specific heat of air at constant pressure is equal to___________________?
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A. 0.17

B. 0.21

C. 0.24

D. 1

E. 1.41

999. Measurement of temperature is based on_________________?
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A. zeroth law of thermodynamics

B. second law of thermodynamics

C. joules law

D. thermodynamic properties

E. first law of thermodynamics

1000. Energy can neither be created nor destroyed but can be converted from one form to other is inferred from_________________?
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A. first law of thermodynamics

B. zeroth low of thermodynamic

C. basic law of thermodynamics

D. second law to thermodynamics

E. claussius statement