Description : Reciprocal of permeability is (a) reluctivity (b) susceptibility (c) permittivity (d) conductance
Last Answer : (a) reluctivity
Description : In the left hand rule, forefinger always represents (a) voltage (b) current (c) magnetic field (d) direction of force on the conductor
Last Answer : (c) magnetic field
Description : Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of (a) 2 x 1(T2 N/m) (b) 2 x KT3 N/m (c) 2 x 10"5 N/m (d) 2x 1(T7 N/m)
Last Answer : (d) 2x 1(T7 N/m)
Description : Which of the following is not a unit of flux? (a) Maxwell (b) Telsa (c) Weber (d) All of the above
Last Answer : (b) Telsa
Description : Which of the following is the unit of magnetic flux density ? (a) weber (b) lumens (c) tesla (d) none of the above
Last Answer : (c) tesla
Description : The S.I. unit of power is (a) Henry (b) coulomb (c) watt (d) watt-hour
Last Answer : (c) watt
Description : Ferrites are a sub-group of (a) non-magnetic materials (6) ferro-magnetic materials (c) paramagnetic materials (d) ferri-magnetic materials
Last Answer : (d) ferri-magnetic materials
Description : Which of the following is expected to have the maximum permeability ? (a) Brass (b) Copper (c) Zinc (d) Ebonite
Last Answer : (d) Ebonite
Description : The magnetism left in the iron after exciting field has been removed is known as (a) permeance (b) residual magnetism (c) susceptance (d) reluctance
Last Answer : (b) residual magnetism
Description : The relative permeability is less than unity is case of (a) ferromagnetic materials (b) ferrites (c) non-ferrous materials (d) diamagnetic materials
Last Answer : (d) diamagnetic materials
Description : The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields (a) meter is surrounded by strong magnetic fields (b) a soft ... is used (c) a plastic shielding is provided (d) a shielding of anon-magnetic material is used
Last Answer : (b) a soft iron shielding is used
Description : Which of the following is a ferromagnetic material ? (a) Tungsten (b) Aluminium (c) Copper (d) Nickel
Last Answer : (d) Nickel
Description : The substances which have a large number of free electrons and offer a low resistance are called (a) insulators (b) inductors (c) semi-conductors (d) conductors
Last Answer : (d) conductors
Description : Electric pressure is also called (a) resistance (b) power (c) voltage (d) energy
Last Answer : (c) voltage
Description : Magnetomotive Force (MMF)
Last Answer : Magnetomotive Force (MMF)
Description : Magnetomotive force formula
Last Answer : Magnetomotive force formula
Last Answer : Mmf is a force that drives magnetic flux in a magnetic circuit.
Description : Coulomb is the unit of which quantity? a) Field strength b) Charge c) Permittivity d) Force
Last Answer : b) Charge
Description : What is the meaning of ' electromotive force 1.5 volts' of a dehydrated cell ?
Last Answer : The electromotive force of a dehydrated cell is 1.5 volts' , which means 1.5 joules of electricity to conduct 1 coulomb of electricity from the positive pole of the cell to the negative pole .
Description : Two cells connected in series have electromotive force of 1.5 V each. Their internal resistances are `0.5 Omega` and `0.25 Omega` respectively. This c
Last Answer : Two cells connected in series have electromotive force of 1.5 V each. Their internal ... potential differnce across the terminals of each cell.
Description : What is the difference between voltage and electromotive force?
Last Answer : Need answer
Description : The twisting force developed by a motor and applied to a shaft is called _____________. A. magnetism B. electromotive force C. torque D. voltage
Last Answer : Answer: C
Description : The force that causes free electrons to move in a conductor as electric current flow is called a/an _____________. A. resistant force B. electromotive force C. inductive force D. dielectric force
Last Answer : Answer: B
Description : What is the function of the interpoles installed in DC motors? A. To provide greater torque by strengthening the main field. B. To provide sparkless commutation without having to shift the brushes. C. To limit the production of counter-electromotive force. D. To limit the starting surge current.
Description : How electromotive force is created in a generator?
Last Answer : When a conductor cuts the magnetic lines of forces, an Electro motive force (emf) is generated. The magnitude of the generated voltage is directly proportional to the rate of change at which a conductor cuts the magnetic lines of force.
Description : Find the force that exists in an electromagnetic wave. a) Electrostatic force b) Magnetostatic force c) Lorentz force d) Electromotive force
Last Answer : c) Lorentz force
Description : According to Faraday’s law, EMF stands for a) Electromagnetic field b) Electromagnetic force c) Electromagnetic friction d) Electromotive force
Last Answer : d) Electromotive force
Last Answer : Gilbert is a unit of magnetomotive force.
Description : Debye is the unit used to measure a) Permittivity b) Electric dipole moment c) Magnetic dipole moment d) Susceptibility
Last Answer : b) Electric dipole moment
Description : The unit of absolute permittivity of a medium is
Last Answer : Farad/ metre
Description : 'Farad' is the unit of : (1) Capacitance (2) Inductance (3) Resistance (4) Conductance
Last Answer : (1) Capacitance Explanation: The Farad is the SI derived unit of capacitance. It is named after the English physicist Michael Faraday.
Description : Pick out the wrong statement. (A) Reciprocal of the resistance to heat flow is called thermal conductance (B) Unit of thermal conductance is W/°K (C) Thermal conductance of a wall of thickness 'L', thermal conductivity 'k' and heat flow area 'A' is kL/A (D) None of these
Last Answer : (C) Thermal conductance of a wall of thickness 'L', thermal conductivity 'k' and heat flow area 'A' is kL/A
Description : Siemens is the unit of---------? A. Electrical Conductance (Answer) B. Magnetic Conductance C. Electrical Capacitance D. Magnetic Capacitance
Last Answer : A. Electrical Conductance (Answer)
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 : What is the unit of conductance and what other term is sometimes used?
Last Answer : NThe mho (v), siemens
Description : Define specific conductance. Write its unit.
Last Answer : Specific conductance is the conductance offered by 1 cm3 of the substance or 1ml solution. OR The conductance offered by a solution or a conducting material having unit length & unit area of cross ... conductance. Unit of specific conductance: ohm-1 cm-1 or mhos-cm-1 or S.cm-1
Description : Define the term equivalent conductance. Write its unit
Last Answer : Equivalent conductance (λv): It is the conductance of the solution containing 1 gm equivalent of solute / electrolyte when placed between two sufficiently large electrodes 1 cm apart. Unit: ohm-1 cm2 / equivalent OR mhos.cm2 /equivalent
Description : ‘Farad’ is the unit of : (1) Capacitance (2) Inductance (3) Resistance (4) Conductance
Last Answer : Capacitance
Description : The metals occuring at the lower most position in the electromotive series (A) Do not resist corrosion (B) Resist corrosion very strongly (C) Are very brittle (D) Are heat insulators
Last Answer : (B) Resist corrosion very strongly
Description : Metal at the top of the electromotive series is (A) Least active (B) Most stable (C) Most active (D) Most noble
Last Answer : (C) Most active
Description : Which one occupies the lowermost position in the electromotive series of metals? (A) Aluminium (B) Noble metals (Ag, Pt, Au) (C) Zinc (D) Alkali metals (K, Na, Li)
Last Answer : (B) Noble metals (Ag, Pt, Au)
Description : A radio signal moves from air to glass. The angle of incidence is 20°. Calculate the angle of refraction. The relative permittivity of the glass is 7.8. A. 7.8° B. 5.04° C. 6.04° D. 7.04°
Last Answer : D. 7.04°
Description : Find the relative permittivity of the medium having a refractive index of 1.6 a) 0.4 b) 2.56 c) 3.2 d) 4.8
Last Answer : b) 2.56
Description : The electric flux density of a surface with permittivity of 2 is given by 12 units. What the flux density of the surface in air? a) 24 b) 6 c) 1/6 d) 0
Last Answer : b) 6
Description : A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become (a) one half (6) double (c) four times (d) none of the above
Last Answer : (a) one half
Description : The relative permittivity of rubber is (a) between 2 and 3 (b) between 5 and 6 (c) between 8 and 10 (d) between 12 and 14
Last Answer : (a) between 2 and 3
Description : Determine the conductance of a two-wire open line with the following parameters: D = 4 in., d = 0.1 in. and ρ = 2.6x108 Ω-m. A. 2.76x10-9 S/m B. 2.76x10-6 S/m C. 2.76x10-12 S/m D. 2.76x10-3 S/m
Last Answer : A. 2.76x10-9 S/m
Description : What’s Eating Gilbert Grape?
Last Answer : Loved that film. Captured small town life quite well IMO. Most people feel like Gilbert at some point in their life. It can be soul crushing to be tied down and held back with unwanted responsibility through no fault of your own.
Description : Triggered by @Jeruba's recent question about opera, have you performed in any of Gilbert and Sullivan's operettas?
Last Answer : Her recent question: What’s the first opera you ever saw performed, either live on stage or on film? (I can’t get the textile markup to work here. Sorry)
Description : Trying to recall a Gilbert & Sullivan quote: "remains of a fine woman"--?
Last Answer : Jeruba – You have stumped my librarian brain but I will think on it. I wonder if there’s a concordance for G &S? Are you sure that “ruins” and “fine woman” are the actual terms used? My colleague who is the theater librarian and a real buff might know.