GATE 1992 Mechanical Engineering
26 questions across 1 session
Spherical roller bearings are normally used
Starting friction is low in
Fatigue strength of a rod subjected to cyclic axial force is less than that of a rotating beam of the same dimensions subjected to steady lateral force because
Calculate the ratio of the solidification times of two steel cylindrical risers of sizes $$30cm$$ diameter by $$60$$ $$cm$$ in height and $$60cm$$ diameter by $$30$$ $$cm$$ in heig...
For resistance spot welding of $$1.5$$ $$mm$$ thick steel sheets, the current required is of the order
In an orthogonal cutting operation on a work piece of width $$2.5mm,$$ the uncut chip thickness was $$0.25$$ $$mm$$ and the tool rake angle was $$0$$(zero) degrees. It was observed...
Instantaneous centre of a body rolling with sliding on a stationary curved surface lies.
In horizontal milling process ............................ (up/down) milling provides better surface finish and .............................. Up/down ) milling provide longer tool...
Two rods, one of length $$L$$ and the other of length $$2L$$ are made of the same material and have the same diameter. The two ends of the longer rod are maintained at $${100^ \cir...
In stream and other vapor cycles, the process of removing non-condensables is called
Boiler rating is usually defined in terms of:
Subsonic and supersonic diffusers have the following geometry:
A condenser of a refrigeration system rejects heat at a rate of $$120$$ $$kW,$$ while its compressor consumes a power of $$30$$ $$kW.$$ The coefficient of performance of the system...
In a steam power plant operating with simple Rankine cycle, the turbine is fed with steam at $$100$$ bar and $$673$$ $$K.$$ Determine the actual enthalpy and quality of the steam e...
A steam turbine operating with less moisture is ____________ (more/less) efficient and ________ (less/more) prone to blade damage.
A low carbon steel is to be welded by the manual metal arc welding process using a linear $$V$$-$$I$$ characteristic $$DC$$ power source. The following data is available. $$O.C$$ v...
In an explosive welding process, the ..................... (maximum/minimum) velocity of impact is fixed by the velocity of sound in the ............. (flyer / target) plate materi...
In a green sand moulding process, uniform ramming leads to
In $$PTP$$ type of $$NC$$ system
The effect of rake angle on the mean friction angle in machining can be explained by
The thickness of the blank needed to produce, by power spinning a missile cone of thickness $$1.5mm$$ and half cone angle $$30deg$$
A fluid flowing over a flat plate has the following properties: dynamic viscocity $$ = 25 \times {10^{ - 6}}\,\,kg/ms,$$ specific heat $$=2.0 $$ $$kJ/kgK,$$ thermal conductivity $$...
The true strain for a low carbon steel bar which is doubled in length by forging is
A Hydro turbine is required to give $$25$$ $$MW$$ at $$50$$ $$m$$ head and $$90$$ $$rpm$$ runner speed. The laboratory facilities available, permit testing of $$20$$ $$kW$$ models...
Two shafts $$A$$ and $$B$$ have their diameters specified as $$100 \pm 0.1\,\,mm$$ and $$0.1 \pm 0.0001\,\,mm$$ respectively. Which of the following statements is/are true
Instantaneous center of a body rolling with sliding on a stationary curved surface lies