Description : Using force, length and time as fundamental quantities, the dimensions of mass would be a.FL-2T+2 b.FL-1T+2 c.FL-1T+1 d.107 dynes e.FL-2T+1
Last Answer : b. FL-1T+2
Description : Which of the following is NOT one of the fundamental quantities in physics? w) time x) length y) weight z) mass
Last Answer : ANSWER: Y -- WEIGHT
Description : What are fundamental units? State the S.l. units of seven fundamental quantities.
Last Answer : What are fundamental units? State the S.l. units of seven fundamental quantities.
Description : Classify the following quantities into fundamental and derived quantities: Length, Velocity, Area, Electric current, Acceleration
Last Answer : Classify the following quantities into fundamental and derived quantities: Length, Velocity, Area, ... Mass, Pressure, Magnetic induction, Density.
Description : The lens equation 1/f = 1/ + 1/ is applicable (A) When the thickness of the lens is small (B) Only to conjugate distances along the principal axis (C) The computed quantities are accurate enough for geometrical optics of simple distances (D) All the above
Last Answer : (D) All the above
Description : Time period of a simple pendulum depends upon the length of pendulum (l) and acceleration due to gravity (g). Using dimensional analysis
Last Answer : Time period of a simple pendulum depends upon the length of pendulum (l) and acceleration due to ... expression for time period of a simple pendulum.
Description : Define dimensions and dimensional formula of physical quantities. Give few examples of dimensional formula.
Last Answer : Define dimensions and dimensional formula of physical quantities. Give few examples of dimensional formula.
Description : The two-dimensional translation equation in the matrix form is a.P’=P+T b.P’=P-T c.P’=P*T d.P’=P
Last Answer : a.P’=P+T
Description : The two-dimensional rotation equation in the matrix form is a.P’=T+P b.P’=S*P c.P’=R*P d.P’=dx+dy
Last Answer : c.P’=R*P
Description : The time `t` of a complete oscillation of a simple pendulum of length `l` is given by the equation `T=2pisqrt(1/g)` where `g` is constant. What is the
Last Answer : The time `t` of a complete oscillation of a simple pendulum of length `l` is given by the equation `T= ... error in `T` when `l` is increased by 1%?
Description : Pick out the wrong statement. (A) The shear stress at the pipe (dia = D, length = L) wall in case of laminar flow of Newtonian fluids is (D/4L). ∆p (B) In the equation, T. gc = k. ... to motion (D) With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids
Last Answer : (D) With increase in the Mach number >0.6, the drag co-efficient decreases in case of compressible fluids
Description : The dimensional formula of bulk modulus of elasticity is same as that of the (A) Pressure (B) Density (C) Force (D) None of these
Last Answer : Option A
Description : In the equation of a nuclear reaction, all but one of the following quantities are equal to each other on both sides of the equation. Which quantity is NOT conserved: w) the net electric charge x) the total mass-energy y) the number of protons z) the number of nucleons
Last Answer : ANSWER: Y -- THE NUMBER OF PROTONS
Description : Write steady flow energy equation considering mass flow rate of fluid. Write units of different quantities involved.
Last Answer : Steady flow process ( open system ) : Hence steady flow equation can be expressed as: Internal Energy at 1 + Potential Energy at 1 + Kinetic Energy at 1 + Flow work at 1 + Heat supplied = Internal ... Flow work at 2 + Work done i.e. Hence the steady flow energy equation is,
Description : Quantities like pressure, temperature, density, viscosity, etc. are independent of mass. What are these called ?
Last Answer : Intensive properties.
Description : If the cohesive force (c), is 1.5 t/m2 , the density ) of the soil is 2.0 t/m3 , factor of safety (F) is 1.5 and stability factor (Sn) is 0.05, the safe height of a slope, is (A) 5 metres (B) 8 metres (C) 10 metres (D) 12 metres
Last Answer : (C) 10 metres
Description : A straight wire of length 0.20 m moves at a steady speed of 3.0 m s-1 at right angles to the magnetic field of flux density 0.10 T. The e.m.f induced across ends of wire is A. 0.5 V B. 0.06 V C. 0.05 V D. 0.04 V
Last Answer : 0.06 V
Description : A string of linear mass density 0.005 kg/m is stretched by a force F=2t^2 N
Last Answer : A string of linear mass density 0.005 kg/m is stretched by a force F=2t^2 N ( t is in sec) as shown in figure. ... 24.5 m/s C) 32 m/s D) 40 m/s
Description : Which of the following pair are vector quantities? w) time and space x) force and momentum y) energy and time z) momentum and mass e) mass
Last Answer : ANSWER: X -- FORCE and MOMENTUM
Description : Which one of the following physical quantities is independent of relativistic speed? a) Mass b) Length c) Time d) Charge
Last Answer : d) Charge
Description : Which of the following physical quantities changes or tends to change the state of rest or of uniform motion of a body in a straight line? (1) Momentum (2) Mass (3) Force (4) Inertia
Last Answer : (3) Force Explanation: Force is an agent which changes or tends to change the state of rest or of uniform motion of a body.
Description : What's the relationship between fundamental and derived quantities?
Last Answer : According to the (National Institute of Standards and Technology (NIST), "The SI is founded on seven SI base units for seven base quantities assumed to be mutually independent, as given in Table 1.""Other ... is generally omitted. "Refer to the Related Link below in order to see Table 1 and Table 2.
Description : What are fundamental quantities? State two examples of fundamental quantities. Write their S.J. and C.G.S. units.
Last Answer : What are fundamental quantities? State two examples of fundamental quantities. Write their S.J. and C.G.S. units.
Description : What are the three fundamental quantities involved in radar displays?
Last Answer : Range, bearing, and elevation.
Description : The design of electromagnets is based upon which of the following fundamental equations ? (a) Force equation (b) Magnetic circuit equation (c) Heating equation (d) Voltage equation (e) All of the above
Last Answer : (e) All of the above
Description : In three dimensional view the molecule of tRNA is (a) L-shaped (b) S-shaped (c) Y-shaped (d) E-shaped.
Last Answer : (b) S-shaped
Last Answer : (a) L-shaped
Description : Set of L-dimensional blocks called the _______of the vector quantizer. a. Group b. Codebook c. Coding d. Index
Last Answer : b. Codebook
Description : A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle ... fluidisation velocity, VOM is (A) 12 mm/s (B) 16 mm/s (C) 24 mm/s (D) 28 mm/s
Last Answer : (B) 16 mm/s
Description : A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system ... What is the porosity of the fluidised bed? (A) 0.2 (B) 0.5 (C) 0.7 (D) 0.8
Last Answer : (C) 0.7
Description : In an `LC` circuit shows in Fig. `C = 1 F`, `L = 4 H`. At time `t = 0`, charge in the capacitor is `4 C` and it is decreasing at the rate of `sqrt(5)
Last Answer : In an `LC` circuit shows in Fig. `C = 1 F`, `L = 4 H`. At time `t = 0`, charge in the capacitor is `4 ... ))` C. `2tan^(-1)((2)/(3)) D. None of these
Last Answer : In an `LC` circuit shows in Fig. `C = 1 F`, `L = 4 H`. At time `t = 0`, charge in the capacitor is `4 ... statement. A. 6 C B. 8 C C. 10 C D. 12 C
Description : Explain the use of dimensional analysis to check the correctness of a physical equation.
Last Answer : Explain the use of dimensional analysis to check the correctness of a physical equation.
Description : The Laplacian operator cannot be used in which one the following? a) Two dimensional heat equation b) Two dimensional wave equation c) Poisson equation d) Maxwell equation
Last Answer : d) Maxwell equation
Description : For one dimensional flow of an incompressible fluid in unsteady state in x-direction, the continuity equation is given by (A) ∂u/∂x = 0 (B) ∂(ρu)/∂x = 0 (C) (∂u/∂x) = - (∂ρ/∂t) (D) ∂ρ/∂t = 0
Last Answer : (A) ∂u/∂x = 0
Description : The equation of continuity holds good when the flow (A) Is steady (B) Is one dimensional (C) Velocity is uniform at all the cross sections (D) All of the above
Last Answer : Answer: Option D
Description : Which of the following are zero dimensional or one dimensional figuresA. RayB. SegmentC. AngleD. PlaneE. Point F. Line?
Last Answer : A. RayB. SegmentE. PointF. Line
Description : What are derived quantities and derived units? State two examples. State the corresponding S.L. and C.G.S. units of the examples.
Last Answer : What are derived quantities and derived units? State two examples. State the corresponding S.L. and C.G.S. units of the examples.
Description : A 53-year-old man presented with hypertension of 150/110 mmHg. He is generally asymptomatic and has no previous medical history of note. He is a smoker of 5 cigarettes daily and drinks ... Adrenocortical adenoma 2) Bartter's syndrome 3) Liddle's syndrome 4) Liquorice ingestion 5) Pheochromocytoma
Last Answer : Answers-1 This patient is most likely to have Conn's syndrome as reflected by the hypokalaemic hypertension. Liquorice ingestion or Liddle's syndrome are again possible causes of ... hypertension (often diastolic hypertension), muscular weakness, paresthesias, headache, polyuria, and polydipsia."
Description : Consider the following statements: 1. Mathematically speaking, the time taken for 100% consolidation is infinite. 2. The time factor for a particular average degree of consolidation depends upon the distribution of initial excess hydrostatic ... 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only
Last Answer : (b) 1 & 2 only
Description : ____ system transmits frequency-division-multiplexed voice band signals over a coaxial cable for distances up to 4000 miles. A. T carrier B. X carrier C. L carrier D. F carrier
Last Answer : C. L carrier
Description : On nephelometry turbidity unit (NTU) is equal to the turbidity produced by (a) 1 mg SiO2 dissolved in 1 l of distilled water with the test being run according to absorption principle (b) 1 ... Formazin dissolved in 1 l o f distilled water with the test being run according to scattering principle.
Last Answer : (d) 1 mg Formazin dissolved in 1 l o f distilled water with the test being run according to scattering principle.
Description : Hungarian method was developed by ........................ a. T C Koopman b. F L Hitchcock c. D Konig d. George B Dantzig
Last Answer : c. D Konig
Description : Transportation model was first introduced by ........................ in the year 1941. a. T C Koopman b. George B Dantzig c. Von-neumann d. F L Hitchcock
Last Answer : d. F L Hitchcock
Description : Assume that the speed (v) of sound in air depends upon the pressure (P) and density (ρ) of air, then use dimensional analysis to obtain
Last Answer : Assume that the speed (v) of sound in air depends upon the pressure (P) and density (ρ) ... analysis to obtain an expression for the speed of sound.
Description : A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The ... = 283 s (B) t = 356 s (C) t = 400 s (D) t = 800 s
Last Answer : (D) t = 800 s
Description : If Cv is the coefficient of consolidation, is the time and is drainage path of one dimensional consolidation of soil, the time factor Tv, is given by (A) Tv = d²/Cv t (B) Tv = t²/d²Cv (C) Tv = Cv3 /d²t (D) Tv = Cv t/dt
Description : Notch sensitivity (q) is given by the equation _______ where K f = fatigue stress concentration factor and K t = theoretical stress concentration factor a. ( K f + 1 ) / ( K t – 1 ) b. ( K f – 1 ) / ( K t – 1 ) c. ( K f + 1 ) / ( K t + 1 ) d. ( K f - 1 ) / ( K t + 1 )
Last Answer : b. ( K f – 1 ) / ( K t – 1 )
Description : The equation, X = A cos(wt + f) (read: X equals A times the cosine of omega t + phi (fee)), can represent an expression for: w) accelerating due to gravity x) uniform straight line motion y) dc current z) a simple harmonic oscillator
Last Answer : ANSWER: Z -- A SIMPLE HARMONIC OSCILLATOR
Description : Which of the following quantities is not the property of the system (a) pressure (b) temperature (c) specific volume (d) heat (e) density.
Last Answer : Answer : d