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Re: Polytechnic Entrance Exam Model Paper In Hindi
As you requires here I am giving you Previous Year Papers of UP Polytechnic Entrance Exam. Sample paper : Q-1). If the ratio of the second and third term in the expansion of (a + b)2 is equal to the ratio of third and fourth term in the expansion of (a + b ) n+3 then the value of n is equal to : a) 6 b) 4 c) 5 d) 3 Ans-) 3 Q-2). The equation of line which is parallel to the straight line 3x + 4y – 7 = 0 and passing through (1,2) is : a) 3x + 4y = 11 b) 3x+4y+11= 0 c) 4x-3y+2=0 d) 3x+4y+7=0 Ans-) 4x-3y+2=0 Also Read- Tips to Reaching Your Full Potential Q-3). A dice is thrown then the probability that the sum of the number is 1 or 6 is: a) 1/6 b) 1/3 c) 2/3 d) 3/4 Ans-) 1/3 Q-4). The sum of 20 terms of the series 1 + 4 + 7 + 10 +….is: a) 290 b) 490 c) 590 d) none of these Ans-) 590 Q-5). Which is correct for inside charged sphere? a) E ≠ 0, V = 0 b) E=0, V= 0 c) E≠0, V≠0 d) E=0, V = 0 Ans-) E=0, V = 0 Q-6). Function of a grid in a triode is : a) to increase plate voltage b) to decrease plate voltage c) reduce the effect of space charge d) None Ans-) to increase plate voltage Q-7). The wavelengths associated with photons and electron are same, the ratio of their momentum will be: a) 1: 1 b) 2: 1 c) 1: 3 d) 3: 1 Ans-) 1: 1 Q-8). Of which the velocity is equal to light velocity: a) Cathode ray b) X-rays c) positive ray d) all Ans-) X-rays Q-9). If the pressure of a gas is doubled at constant temperature, then the velocity of Sound in the gas becomes: a) unchanged b) √2 times c) half d) double Ans-) unchanged Q-10). Which quantity doesn’t remains constant in simple harmonic motion: a) Time period b) velocity c) frequency d) amplitude Ans-) velocity Q-11). The momentum correction factor (β) for the viscous flow through a circular pipe is a) 1.25 b) 1.33 c) 1.50 d) 1.66 e) 2.00 Ans-) B Q-12).A piezometer opening in pipes measures a) velocity head b) static pressure c) total pressure d) negative static pressure. Ans-)B Q-13).An independent mass of a fluid does not posses a) elevation energy b) kinetic energy c) pressure energy d) none of these. Ans-) C Q-14). A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is a) less than 12.2 m of the water b) more than 12.2 m of the water c) equal of 12.2 m of water d) none of these. Ans-) B Q-15). Hydrostatic pressure on a dam depends upon its a) length b) depth c) shape d) material e) both (b) and (c) Ans-) E Q-16).When two layers of a fluid separated by dy move over the other with a difference of velocity dv, causes a shearing stress , where μ is known as a) coefficient of viscosity b) absolute viscosity c) dynamic viscosity d) viscosity e) all the above. Ans-) E Q-17).A pipe of 0.1 m2 cross sectional area suddenly enlarges to 0.3 m2 cross-sectional area. If the discharge of the pipe is 0.3 m3 /sec, the head loss is a) 2/g m of water b) g/2 m of water c) 1g m of water d) g m of water. Ans-) A Q-18).Maximum efficiency of transmission of power through a pipe, is a) 25% b) 33.3% c) 50% d) 66.67%. Ans-) D Q-19).An ideal flow of a liquid obeys a) Continuity equation b) Newton’s law of viscosity c) Newton’s second law of motion d) dynamic viscosity law, Ans-) A Q-20). Reynold number is the ratio of initial force and a) viscosity b) elasticity c) gravitational force d) surface tension. Ans-) A |
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