Description : The SI units of permitivity are: (a) N.m/C2(b) C2/N.m2 (c) N.m2/C2(d) N.m/C
Last Answer : (b) C2/N.m2
Description : The unit of inductance is: a. Volt b. Ampere c. Henry d. Ohm
Last Answer : c. Henry
Description : SI unit for the surface tension is ____. (1) kg/m2 (2) kg/m3 (3) N/m (4) kg/m
Last Answer : (3) N/m Explanation: Surface tension is measured in force per unit length. Its SI unit is Newton per meter.
Description : The unit of conductance in SI unit is (A) W/m (B) W/m2 (C) W/°K (D) W/m°K
Last Answer : (C) W/°K
Description : The unit of dynamic viscosity in SI unit is (A) kg/m. sec (B) N/m2 (C) m2 /sec (D) m/N. sec
Last Answer : (A) kg/m. sec
Description : The unit of Torque in SI units (a) kg-m (b) kg-cm (c) N-m (d) N/m2
Last Answer : (c) N-m
Description : The SI unit of Planck’s constant is a) Joule – Sec-1 b) Joule – Sec-2 c) Joule – Sec d) Joule – Sec2
Last Answer : c) Joule – Sec
Description : SI unit of gain of amplifier is (a) Volt (b) ampere (c) coulomb (d) dimensionless
Last Answer : (d) dimensionless
Description : The Si unit of mutual inductance and self inductance is: a.same b. different c. no unit d. a & b
Last Answer : b. different
Description : The SI unit of charge is: (a) Meter (b) Ampere (c) Coulomb (d) Volt
Last Answer : (c) Coulomb
Description : The SI unit of charge is: (a) Coulomb (b) Calorie (c) Ampere (d) Joule
Last Answer : a) Coulomb
Description : The resistivity of ..... decreases with the increase in temp. a. gold b. silver c. copper d. silicon
Last Answer : d. silicon
Description : A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part a. remains the same b. is doubled c. is halved d. becomes zero
Last Answer : a. remains the same
Description : If PN junction is forward biased its resistance is (a) Zero (b) Infinity (c) A few ohm (d) A few kilo ohms
Last Answer : c) A few ohm
Description : Electric current produces magnetic field was suggested by: a. Faraday b. Lenz c. Ohm d. Oerested
Last Answer : c. Ohm
Description : Three resistors of resistance R are connected in various ways, which of the following cannot be obtained? a. 3R ohm b. 2R/4 ohm c. R/3 ohm d. 2R/3 ohm
Last Answer : b. 2R/4 ohm
Description : Resistance between points A and B in the circuit shown in figure is a. 4 ohm b. 6ohm c. 10 ohm d. 8 ohm
Last Answer : c. 10 ohm
Description : The SI unit of charge is -----? A. Ampere B. Coulomb (Answer) C. Ohm D. Volt
Last Answer : B. Coulomb (Answer)
Description : The value of Stefan-Boltzmann constant in SI unit is (A) 5.6697 × 10 -8W/m2 .°K4 (B) 0.1714 × 10 -8W/m2 .°K4 (C) 5.6697 × 10 -8kcal/m2 . °K4 (D) 0.1714 × 10 -8kcal/m2 . °K4
Last Answer : (A) 5.6697 × 10 -8W/m2 .°K4
Description : In SI units, thermal conductivity is expressed in (A) Watt/m.°K (B) Watt/m2 . °K (C) Watt/m2 . °K (D) Watt/m4 . °K
Last Answer : (A) Watt/m.°K
Description : The resistivity of a material with resistance 200 ohm, length 10m and area twice that of the length is a) 200 b) 300 c) 400 d) 500
Last Answer : c) 400
Description : Materials having resistivity ranging from 1 to 100 ohm. cm is termed as (A) Conductor (B) Insulator (C) Semi-conductor (D) None of these
Last Answer : (C) Semi-conductor
Description : Which material is having highest resistivity in ohm-metre at 20oC X10-8? A. Mercury B. Iron C. Tungsten D. Silver
Last Answer : Mercury material is having highest resistivity in ohm-metre at 20oC X10-8
Description : The unit of relative permeability is (a) henry/metre (b) henry (c) henry/sq. m (d) it is dimensionless
Last Answer : (d) it is dimensionless
Description : The S.I. unit of Rydberg’s constant is a) m-2 b) m-1 c) cm-1 d) cm-2
Last Answer : b) m-1
Description : S.I unit of strain is a) Newton b) N m–2 c) Pascal d) no unit
Last Answer : a) Newton
Description : S.I unit of stress is: a) N/m b) N m c) Nm–2 d) Newton
Last Answer : c) Nm–2
Description : What is the unit of thermal conductivity? (A) Kcal/hr. m2 °C (B) Kcal/hr.m.°C (C) Kcal/hr.m (D) Kcal/hr. °C
Last Answer : (B) Kcal/hr.m.°C
Description : . One stoke (unit of kinematic viscosity) is equivalent to (A) 1 cm2 /second (B) 1 m2 /second (C) 1 gm/cm. second (D) 1 kg. m/second
Last Answer : (A) 1 cm2 /second
Description : The unit of bulk modulus of elasticity for a liquid in S.I. unit is (A) N (B) N/m (C) N/m2 (D) N/m3
Last Answer : (C) N/m2
Description : 5. Unit of surface tension in S.I. unit is (A) Watt/m (B) Joule/m2 (C) Newton/m2 (D) Joule/m
Last Answer : Option B
Description : In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are. (A) μ , α and θ all have units of m/ ... μ has unit of m/s (D) α and θ have units of m/s, while μ has unit of m2/s
Last Answer : Option C
Description : The unit of surface tension is (A) N/m (B) N/m2 (C) N/m3 (D) N-m
Last Answer : Answer: Option A
Description : The unit of kinematic viscosity in S. I. units is (A) N-m/s (B) N-s/m2 (C) m 2 /s (D) N-m
Last Answer : Answer: Option C
Description : The unit of dynamic viscosity in S.I. units is (A) N-m/s2 (B) N-s/m2 (C) Poise (D) Stoke
Last Answer : Answer: Option B
Description : What is the unit of relative density? (1) kg/m (2) kg/m2 (3) kg/m3 (4) It has no unit
Last Answer : It has no unit
Description : S.I. unit of Magnetic flux is (1) weber (2) weber/m (3) weber/m4 (4) weber–m2
Last Answer : weber
Description : Tesla is a unit of (a) field strength (b) inductance (c) flux density (d) flux
Last Answer : (c) flux density
Description : The unit of electric intensity is
Last Answer : Volt/ metre
Description : The unit of absolute permittivity of a medium is
Last Answer : Farad/ metre
Description : What is the unit for capacitance ?
Last Answer : Farad
Description : The S.I Unit of Modulus elasticity is: a) Pascal b) Coulomb c) Ampere d) None
Last Answer : a) Pascal
Description : The unit Nm–2 is also called a) Coulomb b) Newton c) Pascal d) Ampere
Last Answer : c) Pascal
Description : A smallest three dimensional part of a crystal lattice is called. a) A particle b) A molecules c) A unit cell d) An atom
Last Answer : c) A unit cell
Description : Energy stored per unit volume inside the solenoid is called: a. Energy density b. Charge Density c. Mass density d. Volume charge density
Last Answer : energy density is correct
Description : The self-inductance of a long solenoid with a turns per unit length is: a. L = μ nA/ l b. L = μ n2 A/ l c. L = μ n2 A l d. L = μ n l/ A
Last Answer : d. L = μ n l/ A
Description : Which of the following does not equal the unit of magnetic flux density? a) 1 Wbm-2 b) 1 NA-1m -1 c) Both (a) and (b) d) 1 Wbm-1
Last Answer : d) 1 Wbm-1
Description : The force per unit charge is called: (a) Electric field (b) Electric field intensity (c) Electric potential energy (d) Electric potential
Last Answer : b) Electric field intensity
Description : The left hand rule correlates to (a) current, induced e.m.f. and direction of force on a conductor (b) magnetic field, electric field and direction of force on a conductor (c) self induction, ... and direction of force on a conductor (d) current, magnetic field and direction of force on a conductor
Last Answer : (d) current, magnetic field and direction of force on a conductor
Description : A typical nucleus is less than _____ in diameter. a) 1010 m b) 10-10 m c) 1014 m d) 10 -14 m
Last Answer : d) 10 -14 m