Q. 2 Explain working of disc brake with simple sketch.
Q. 3 Explain construction and working of rigid flanged coupling.
Define following properties:
i) Ductility ii) Malleability iii) Brittleness iv) Strength
v) Resilience vi) Elasticity vii) Hardness viii) Toughness
ix) Creep x) Fatigue xi) Plasticity
Q. 7 Draw neat sketch of sand casting process setup. State advantages, limitations and
engineering applications of the process.
Q. 8 Draw self explanatory diagrams of blanking, punching, piercing and drawing operations.
Q. 9 Explain hot forging process with neat sketch.
Q. 11 Draw block diagram of radial drilling machine and explain tapping operation.
Tapping Operation:
Q. 12 With neat sketches explain surface grinding and cylindrical grinding operations.
Q. 13 Define thermodynamic system. Explain its types with example.
System, Surrounding & Boundary :• Thermodynamic system is defined
as a quantity of matter or region in
space chosen for study.
• Example- Classroom
• The mass or region outside the
system is called the Surroundings.
• System boundary is the real or
imaginary surface that separates the
system from the surrounding.
• E.g. Classroom walls.
• Boundary can be fixed or movable.
Thermodynamics Systems : Open system
➢ A system that involves mass & energy
transfer across its boundaries is called an
open system.
➢ E.g.- compressor, turbine, nozzle.
➢ We permit the mass to cross the system
boundary in either direction.
➢ Energy in the form of heat or work can
cross the open system boundary.
➢ Most of engineering problems involve
mass flow in and out of a system.
➢ The term control volume is used in place
of open system.
➢ No mass is permitted to cross the system
boundary. (constant mass)
➢ E.g. : Classroom with door & windows closed.
➢ A system in which mass is fixed called a
closed system, or control mass system.
➢ Energy in the form of heat or work can cross
the closed system boundary.
➢ In closed system, boundary does not have to
be fixed.
➢ If energy (heat/work) is not allowed to cross
we have an isolated system.
➢ By definition, universe is isolated system.
Thermodynamics Systems : Closed and Isolated
Q. 14 State zeroth, first and second (Clausius statement and Kelvin-Planck’s statement) law
of thermodynamics.
Zeroth Law of Thermodynamics: If two bodies are in thermal equilibrium with a third body
separately, they are also in thermal equilibrium with each other.
First Law of Thermodynamics: Energy can neither be created nor destroyed but it can only
be converted from one form to another.
Second Law of Thermodynamics:
Kevin-Planck Statement: It is impossible for heat engine operating on a cycle to receive
heat from a single reservoir and produce net work.
Clausius statement: It is impossible to construct a device that operates in a cycle and
produces no effect other than the transfer of heat from a lower-temperature body to a higher-
temperature body.
Q.15 Draw a sketch of heat pump and refrigerator using heat source and heat sink concept.
Prove that: (COP)heat pump = (COP)refrigerator + 1.
Q. 16 Numerical
Q. 17 Differentiate between water tube and fire tube boilers.
Q. 18 Write a note on Hydro-electric power plant.