Thermax Placement Paper Aptitude - General National Power Training Instt.(ER)-29 Sep 2010
1) The intermediate pressure of a two stage compressor working between p1 and p2 pressure is squareroot(p1.p2) 2) In an isothermal atmosphere the relation between rate of pressure and rate of density change is 3) Value of T(torque) in combined bending moment and torsion 4) A ball bearing arrangement mechanism is used in steering mechanism 5) A shaft of 100 mm dia delivering 100 hp at 100rpm. The torque in kg-m is 6) For isentropic flow in a convergent divergent nozzle is(V 7) relation between t2 and t1 in terms if gamma and Mach no. 8) Simple problem of mechanics where 3 bodies of mass 10,20,30 are connected together and pulled with a force of 60N. calc. accelaration 9) Relation between lead and pitch in screw jack 10) Internal energy is function of temperature 11) Which delivers least power i) Cyl & piston ii) Cam and follower iii) Belt drive iv)Gear drive 12) Newtons law states that i) work is a fraction of heat energy transfer ii) Heat energy is a fraction of work transfer iii) No relation 13) Thermal conductivity is defined as 14) Area=1m * 1.5m wall, k=0.4, l=0.6 find thermal resistance 15) Calc COP in a vapour compression refrigeration cycle all enthalpy values would be given 16) COP of a heat pump working between source (7 deg C) and sink (-33 deg C); i/p work 1000J o/p 750J 17) Efficiency of Screw jack 18) Relation between coeff of rigidity, co-eff of elasticity and poisson's ration 19) Simple pitot measures flow velocity 20) Expression of centre of pressure for a rectangular lamina 21) Arrange according to resistance. RTD, thermocouple, thermistor 22) Output of a thermocouple is measured in mV 23) Thermal conductivity of water increases with temp, decreases with temp, increases first then decreases, decreases first then increases. (out of 40 ques 23 are here) Aptitude + Verbal reasoning 20 Mirror images 10 English(fill in the blanks in comprehension, sequence testing, meaning of passages) 10 Data sufficiency (quite tough) 20 Quantitative Aptitude(8-10 easy, 10 quite high) Myself Arijit Debroy was an appearing candidate only.
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