Mechanical J.E Quiz-11

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Question 1

In all irreversible process, entropy of the system ________.

• AIncreases
• BDecreases
• Czero
• Dcan be zero,positive or negative

Question 2

A fluid flow taking place continuously round a curved path about a fixed axis of rotation, is known as _________.

• Arotational flow
• Bradial flow
• Ccircular flow
• Dvortex flow

Question 3

The indicator diagram shown in the figure below obtained on a compressor shows that __.

• Asuction valve or piston rings, or both are leaking
• Bdischarge valve is leaking into cylinder during compression stroke
• Cslow opening suction valve
• Dsuction valve sticking open at beginning of compression stroke

Question 4

The figure given below shows the variation of temperature across the thickness of materials with different thermal conductivities under steady states. Curve C will be applicable when thermal conductivity of the material _________

• Aincreases with increase in temperature
• Bdecreases with increase in temperature
• Cis very large
• Dis constant at all temperatures

Question 5

Thermal equilibrium between two or more bodies exists, when they are brought together, there is no change in _______.

• ADensity
• BPressure
• CTemperature
• DAll options are correct

Question 6

The universal gas constant of a gas is the product of molecular weight of the gas and __.

• AGas constant
• BSpecific heat at constant pressure
• CSpecific heat at constant volume
• DNone of these

Question 7

A system consisting of more than one phase is called ______.

• AIsolated system
• BOpen system
• CNon-uniform system
• DHeterogeneous system

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