Description : The relation between the speed of light, permeability and permittivity is a) C = 1/√(με) b) C = με c) C = μ/ε d) C = 1/με
Last Answer : a) C = 1/√(με)
Description : In electric fields, D= ε E. The correct expression which is analogous in magnetic fields will be a) H = μ B b) B = μ H c) A = μ B d) H = μ A
Last Answer : b) B = μ H
Description : Which of the following relation will hold good? a) D = μ H b) B = ε E c) E = ε D d) B = μ H
Last Answer : d) B = μ H
Description : The expression for phase constant is given by a) Phase constant β = ωμε b) Phase constant ω = με c) Phase constant β = ω√(με) d) Phase constant β = 1/ωμε
Last Answer : c) Phase constant β = ω√(με)
Description : The expression for the loss tangent is given by a) σ/ωε b) ωε/σ c) σ/ω d) ω/ε
Last Answer : a) σ/ωε
Description : The phase shift in the electric and magnetic fields in an EM wave is given by which parameter? a) phase constant b) attenuation constant c) propagation constant d) intrinsic impedance
Last Answer : d) intrinsic impedance
Description : The intrinsic impedance of free space is given by a) 272 ohm b) 412 ohm c) 740 ohm d) 377 ohm
Last Answer : d) 377 ohm
Description : The expression for velocity of a wave in the conductor is a) V = √(2ω/μσ) b) V = √(2ωμσ) c) V = (2ω/μσ) d) V = (2ωμσ)
Last Answer : a) V = √(2ω/μσ)
Description : The intrinsic impedance of free space is a) 489 b) 265 c) 192 d) 377
Last Answer : d) 377
Description : The intrinsic impedance is the ratio of square root of a) Permittivity to permeability b) Permeability to permittivity c) Phase constant to wavelength d) Wavelength to phase constant
Last Answer : b) Permeability to permittivity
Description : The gradient of the magnetic vector potential can be expressed as a) –με dV/dt b) +με dE/dt c) –με dA/dt d) +με dB/dt
Last Answer : a) –με dV/dt
Description : Electric field intensity due to infinite sheet of charge σ is a) Zero b) Unity c) σ/ε d) σ/2ε
Last Answer : d) σ/2ε
Description : The propagation constant of the wave in a conductor with air as medium is a) √(ωμσ) b) ωμσ c) √(ω/μσ) d) ω/μσ
Last Answer : a) √(ωμσ)
Description : The Laplacian of the magnetic vector potential will be a) –μ J b) – μ I c) –μ B d) –μ H
Last Answer : a) –μ J
Description : The intrinsic angle of the wave with a loss angle of 60 is a) 120 b) 60 c) 90 d) 30
Last Answer : d) 30
Description : If the intrinsic angle is 20, then find the loss tangent. a) tan 20 b) tan 40 c) tan 60 d) tan 80
Last Answer : b) tan 40
Last Answer : Intrinsic impedance of free space is given as 377 ῼ.
Description : The expression for refractive index is given by a) N = v/c b) N = c/v c) N = cv d) N = 1/cv
Last Answer : b) N = c/v
Description : The expression for the inductance in terms of turns, flux and current is given by a) L = N dφ/di b) L = -N dφ/di c) L = Niφ d) L = Nφ/i
Last Answer : a) L = N dφ/di
Description : The expression for magnetization is given by(I-current, A-area, V-volume) a) M = IAV b) M = IA/V c) M = V/IA d) M = 1/IAV
Last Answer : b) M = IA/V
Description : The minimum impedance of a 75 ohm transmission line with a SWR of 2.5 is a) 100 b) 50 c) 25 d) 30
Description : The maximum impedance of a 50 ohm transmission line with SWR of 3 is a) 50/3 b) 3/50 c) 150 d) 450
Last Answer : c) 150
Description : Find the standing wave ratio, when a load impedance of 250 ohm is connected to a 75 ohm line. a) 0.3 b) 75 c) 250 d) 3.33
Last Answer : d) 3.33
Description : Standing waves occurs due to a) Impedance match b) Impedance mismatch c) Reflection d) Transmission
Last Answer : b) Impedance mismatch
Description : If (x, y) is a solution of the following pair of linear equations in two variables, then the value of expression (√ is: x + 2y = 4 and 3x - y = 5 (a) 2 (b) 3 (c) 4 (d) √2
Last Answer : (a) 2
Description : The torque expression of a current carrying conductor is a) T = BIA cos θ b) T = BA cos θ c) T = BIA sin θ d) T = BA sin θ
Last Answer : c) T = BIA sin θ
Description : Colebrook equation for friction factor in turbulent flow is given by, f -0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to (A) 0 (B) 1 (C) ∞ (D) 0.5
Last Answer : (B) 1
Description : For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by (A) (ε1 + ε2)/ε1.ε2 (B) ε1.ε2/(ε1 + ε2 - ε1.ε2) (C) ε1.ε2 (D) ε1 + ε
Last Answer : Option B
Description : Agonist induced autophosphorylation, internalization and down regulation is a distinctive feature of: A. G-protein coupled receptors B. Intrinsic ion channel containing receptors C. Tyrosine protein kinase receptors D. Receptors regulating gene expression
Last Answer : C. Tyrosine protein kinase receptors
Description : Receptors perform the following function/functions: A. Ligand recognition B. Signal transduction C. Both ligand recognition and signal transduction D. Disposal of agonists and antagonists
Last Answer : D. Disposal of agonists and antagonists
Description : The following receptor type has 7 helical membrane spanning amino acid segments with 3 extracellular and 3 intracellular loops: A. Tyrosine protein kinase receptor B. Gene expression regulating receptor C. Intrinsic ion channel containing receptor D. G protein coupled receptor
Last Answer : D. G protein coupled receptor
Description : Termination of the synthesis of the RNA molecule is signaled by a sequence in the template strand of the DNA molecule, a signal that is recognized by a termination protein, the (A) Rho (ρ) factor (B) σ factor (C) δ factor (D) ε factor
Last Answer : Answer : A
Description : Type ε H chain is present in (A) Ig A (B) Ig M (C) Ig D (D) Ig E
Last Answer : Answer : D
Description : In thermal radiation for a black body (where, ε is emissivity and α is absorptivity) (A) α = 1; ε ≠ 1 (B) α ≠ 1, ε = 1 (C) α ≠ 1, ε ≠ 1 (D) α = 1; ε = 1
Last Answer : (D) α = 1; ε = 1
Description : Damping factor, ε = A. C/Cc B. C.Cc C. K/m D. K.m
Last Answer : A. C/Cc
Description : Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0 ) with age/time (t) (where, ε = roughness of the surface after time't'. α = a co-efficient to be experimentally determined ... ε = ε0 + α.t 2 (C) ε = ε0 + α.t 3 (D) ε = ε0 + α.t
Last Answer : (A) ε = ε0 + α.t
Description : Consider the languages L1 = ϕ, and L2 = {1}. Which one of the following represents L1* U L2* L1* ? (1) {ε} (2) {ε,1} (3) ϕ (4) 1*
Last Answer : 1*
Description : What is a conical pendulum? Show that its time period is given by 2π √(l cos θ)/g, where l is the length of the string,
Last Answer : What is a conical pendulum? Show that its time period is given by 2π\(\sqrt{\frac{l\,cos\, ... the vertical and g is the acceleration due to gravity.
Description : For spheres, the specific surface shape factor is given by (A) AD/V (B) D/V (C) A/V (D) √(AD/V)
Last Answer : (A) AD/V
Description : Critical Speed (Nc ) of a ball mill is given by (where R1 and R2 are radii of ball mill and the ball respectively). (A) Nc = (1/4π). √(g/R1 - R2 ) (B) Nc = (1/2π). √(g/R1 - R2 ) (C) Nc = (1/π). √(g/R1 - R2 ) (D) Nc = (1/2π). √(R1 - R2 /g)
Last Answer : (B) Nc = (1/2π). √(g/R1 - R2 )
Description : Torricelli's theorem states that the velocity ‘v’ of the liquid emerging from the bottom of the wide tank is given by √(2gh). In practice, this velocity is: A. equal to √(2gh) B. greater than √(2gh) C. lesser than √(2gh) D. independent of height and gravitational field strength
Last Answer : lesser than √(2gh
Description : Period of simple harmonic motion of a spiral spring or elastic thread is given by A. T = 2π (extension produced/gravitational field strength) B. T = 2π (extension produced/√( ... (extension produced)/gravitational field strength) D. T = 2π √(extension produced/gravitational field strength)
Last Answer : T = 2π × √(extension produced/gravitational field strength)
Description : Speed ‘v’ with which wave travels through a medium is given by A. modulus of elasticity/density of the medium B. modulus of elasticity/√(density of the medium) C. √(modulus of elasticity/density of the medium) D. v=d/t
Last Answer : √(modulus of elasticity/density of the medium)
Description : In distortion energy theorem, if a unit cube is subjected to biaxial stress, then S(yt) is given by which of the following? a) √ (σ12- σ1σ2 +σ22) b) σ12- σ1σ2 +σ22 c) √ (σ12+ σ1σ2 +σ22) d) σ12+ σ1σ2 +σ22
Last Answer : a) √ (σ12- σ1σ2 +σ22)
Description : A transmission shaft is subjected to bending moment (Mb) and torsional moment (Mt). The equivalent bending moment is given by, (A) √(Mb + Mt) (B) √(Mb2 + Mt2) (C) Mb + Mt (D) Mb +√(Mb2 + Mt2)
Last Answer : (D) Mb +√(Mb2 + Mt2)
Description : A transmission shaft is subjected to bending moment (Mb) and torsional moment (Mt). The equivalent torsional moment is given by, (A) √(Mb + Mt) (B) √(Mb2 + Mt2) (C) Mb + Mt (D) Mb +√(Mb2 + Mt2)
Last Answer : (B) √(Mb2 + Mt2)
Description : . In centrifugal pendulum absorber , the natural frequency in cycle per second can be given by A Fn =N √(R/L) B Fn =1/N √(R/L) C Fn =N/2 √(R/L) D Fn =N2 √(R/L)
Last Answer : A Fn =N √(R/L)
Description : In centrifugal pendulum absorber , the natural frequency in cycle per second can be given by A) Fn =N √(R/L) B) Fn =1/N √(R/L) C) Fn =N/2 √(R/L) D) Fn =N2 √(R/L)
Last Answer : A) Fn =N √(R/L)