GATE ME Question Paper 2009.
GATE i.e. Graduate Aptitude Test in Engineering Mechanical Engineering 2009 Exam Has been Conducted by IISc Bangalore IIT Bombay IIT Delhi IIT Guwahati IIT Kanpur IIT Kharagpur IIT Madras IIT Roorkee. This GATE ME 2009 examination is the procedure to get the admission in M.Tech
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GATE ME Question Paper 2009
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1.If a closed system is undergoing an irreversible process, the entropy of the system
(A) Must increase
(B) Always remains constant
(C) Must decrease
(D) Can increase, decrease or remain constant
2. A coolant fluid at 30°C flows over a heated flat plate maintained at a constant temperature of 100°C. The boundary layer temperature distribution at a given location on the plate may be approximated as ( ) T 30 70exp y = + − where y (in m) is the distance normal to the plate and T is in °C. If thermal conductivity of the fluid is 1.0W/mK, the local convective heat transfer coefficient (in W/m2K) at that location will be
(A) 0.2 (B) 1 (C) 5 (D) 10
3. A frictionless piston-cylinder device contains a gas initially at 0.8MPa and 0.015m3. It expands quasi-statically at constant temperature to a final volume of 0.030m3. The work output (in kJ) during this process will be
(A) 8.32 (B) 12.00 (C) 554.67 (D) 8320.00
4. The rotor shaft of a large electric motor supported between short bearings atboth deflection of 1.8mm in the middle of the rotor. Assuming the rotor to beperfectly balanced and supported at knife edges at both the ends, the likelycritical speed (in rpm) of the shaft is
(A) 350 (B) 705 (C) 2810 (D) 4430