#PhysicsTest Physics : Fluid Dynamics Electronics 1-The drag force between different layers of the liquid is given by : a)Fd=6 pi nrv b)Fd=6 pi n / rv c)Fd=6 pi nr/v d)None 2-The dimensions of coefficient of viscocity are : ML-1T-1 b)ML2T-1 c)ML-1T-1 d)None 3-The drag force increase as the speed of the object : a)Increaes b)Decreases c)Remains Constant d)None 4-The base of equation of continuity is on : a)First law of motion b)Law of conservation of mass c)Law of conservation of charge d)Law of conservation of momentum 5-When a droplet falls through a medium with terminal velocity,the acceleration is : a)Maximum b)Minimum c)Constant d)Zero 6-Bernoulli’s equation is the fundamental equation in fluid dynamics that relates pressure to : a)Height of fluid column b)Fluid Speed c)Both d)None 7-In deriving Bernoulli’s equation we assume that the fluid is : a)Incompressible b)Non-viscous c)Steady in flow d)All 8-Venturis relation is given by : A_P1+P2=1/2pv2^2 B) P1-P2=1/2pv2^2 c) P1+P2=1/2p2v2^2 d) P1-P2=1/2p2v2 9-Blood Pressure is detected by : a)Stethoscope b)Sphygmomanometer c)Both d)None 10-The concentration of RBCs is : a)50% b)55% c)60% d)None 11-Keeping in view the Earth’s Surface,the value of g on equator is : a)Zero b)Minimum c)Maximum d)None 12-A two inputs NAND Gate with inpit A and B has an output 0 if: a)A is 0 b)B is 0 c)Both inputs are 1 d)Both A nd B are 0 13-The output if a two inputs OR gate is 0 only when its : a)Both inputs are 0 b)Both inputs are 1 c)Either input is 1 d)either input Is 0 14-Truth table of logic function : a)Summarizes its outputs b)Tabulates all its inputs conditions only c)Display all its inputs/output possibilities d)is not based on logic algebra 15-The output of a two input OR gate is 0 only when : a)Both inputs are 0 b)Both inputs are 2 c) Both inputs are 3 d) Both inputs are6 16-The putput of two input AND gate has output 1 only when : a) Both inputs are 3 b) B) Both inputs are1 c) C) Both inputs are2 d) D) Both inputs are6 17-The electric circuit which inverts the input signal is called : a)OR gate b)AND gate c)NOT gate d)NOR gate 18-The basicoperations of Boolean algebra are : a)AND,OR and NOT b) AND and NOT c)NAND NOT and AND d) NOR NAND OR 19-The production of electrons in a cathode ray tube is : a)From aradioactive source b)By ionization of air c)By applying electric field to the X-Plates d)By heating filaments 20-A sinusoidal trace is observed ib a CRO Screen.For this alternating potential was given to : a)Anode b)The Cathode c)The filament d)The Y plates 21-The blood pressure of the person _____ with age : a)Increases b)Decreases c)Remains Constant d)None 22-In bernoulli’s equation which one of the following is conceived : a)Mass b)Energy c)Linear Momentum d)Angular Momentum 23-Force of friction is present in : a)Liquid b)Solid c)Gases d)All 24-The function of GRID in a CRO is : a)Focus Control b)Brightness Control c)Controlling position of beam d)To accelerate the electron beam 25-How are electrons emitted in CRO : a)By applying a very strong electric field at room temperature b)By Photo-electric emission c)By thermionic emission d)All
Posted on: Thu, 22 Aug 2013 10:29:02 +0000
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