Description : Michael Faraday was known by his work on: (a) Electric force (b) Weak nuclear force (c) Strong nuclear force (d) Gravitational force
Last Answer : (a) Electric force
Description : In motor a permanent magnet provides: a. Electric field b. electric flux c. magnetic field d. gravitational field
Last Answer : d. gravitational field
Description : When the field is strong, the lines of force are: (a) Closer (b) Parallel (c) Farther (d) All of above 45. The electric lines of force determine the strength of an: (a) Gravitational field (b) Constant field (c) Magnetic field (d) Electric field
Last Answer : d) Electric field
Description : The expression F⃗ = qE⃗⃗ + q(v⃗ × B⃗⃗) represents _________ force a) Maxwell b) Gravitational c) Magnetic d) Lorentz
Last Answer : d) Lorentz
Description : What is 1712 - N 23?
Last Answer : 1689
Description : 1685,1712,1837, 2280, 2909, ? a) 4119 b) 3775 c) 4094 d) 4240 e) 3656
Last Answer : Answer: d)
Description : Why do physicists still make use of Newton's equations in describing gravitational forces on earth?
Last Answer : Need answer
Description : determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than (A) Two members with unknown forces ... C) Four members with unknown forces of the frame (D) Three members with known forces of the frame
Last Answer : (B) Three members with unknown forces of the frame
Description : When did Christopher Marlow die? A. 30 May 1593 B. 12 September 1598 C. 26 April 1601 D. 15 February 1611
Last Answer : 30 May 1593
Description : James Town was founded in: (a) 1607 (b) 1609 (c) 1611
Last Answer : (a) 1607
Description : The first scientific reference to these objects was a 1611 treatise by Johannes Kepler titled A New Year’s Gift or On the Six-Cornered ____. It would be 300 years before his question (of why they always exhibit a six- fold symmetry) could finally be answ
Last Answer : Snowflakes OR Snow crystals.
Description : In order to keep a body moving in a circle, there exists a force on it that is directed toward the center of the circle. This force is known asA. Centrifugal force B. Centripetal force C. Gravitational Force D. magnetic force
Last Answer : Centripetal force
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 : What is an electric tachometer?*
Last Answer : A generator producing voltage proportional to speed.
Description : The unit of electric intensity is
Last Answer : Volt/ metre
Description : The reverse process of photo-electric effect is called: a) Annihilation of matter b) Compton effect c) Pair production d) X-rays
Last Answer : d) X-rays
Description : A device based on photo electric effect is called a) Photo sensitive b) Photo diode c) Photo synthesis d) Photo cell
Last Answer : d) Photo cell
Description : A sensor which changes light intensity into electric voltage. (a) LDR (b) thermistor (c) photodiode (d) photovoltaic
Last Answer : (a) LDR
Description : The windings of the electromagnetic are usually called: a. Magnetic coils b. Field coil c. Electric coil d. simple coil
Last Answer : c. Electric coil
Description : Which of the following converts electric energy into mechanical energy: a. Transformer b. DC generator c. Motor d. AC generator
Last Answer : d. AC generato
Description : Electric current produces magnetic field was suggested by: a. Faraday b. Lenz c. Ohm d. Oerested
Last Answer : c. Ohm
Description : The deflection system of a TV picture tube makes use of a) magnetic deflection b) electric deflection c) Both (a) and (b) d) None of these
Last Answer : a) magnetic deflection
Description : Electric power a. V×I b. W/t c. V 2 /I d. E2 /t
Last Answer : . V×I
Description : Heat energy is converted into electrical energy a. solar cells b. thermocouples c. electric generators d. none
Last Answer : b. thermocouples
Description : An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be a. 12 b. 24 c. 5 d. 1100
Last Answer : a. 12
Description : The electric intensity at a distance of 1m from the point charge is 1μC is: (a) 9 × 109 N/C (b) 9 × 106 N/C (c) 9 × 103 N/C (d) 9 N/C
Last Answer : c) 9 × 103 N/C
Description : The electric intensity is a: (a) Scalar quantity (b) Vector quantity (c) Physical quantity (d) None of above
Last Answer : (b) Vector quantity
Description : The practical application of electrostatic is: (a) Photocopier (b) X-rays machines (c) Laser (d) All of above 42. The electric field lines emerge from the charges in: (a) Three dimensions (b) Two dimensions (c) One dimension (d) All of above
Last Answer : (a) Photocopier
Description : The electric field exist around: (a) Charges (b) On the left side (c) At the –ve charge (d) At the +ve charge
Last Answer : (a) Charges
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 space around the charge within which other charges are influenced by it is called: (a) Electric field (b) Magnetic field (c) Electric flux (d) Electric intensity
Last Answer : a) Electric field
Description : The concept of electric field theory was introduced by: (a) Kepler (b) Newton (c) Dalton (d) Michael Faraday
Last Answer : (d) Michael Faraday
Description : The number of electric field lines passing through a certain element of area is called: (a) Electric lines of force (b) Electric intensity (c) Electric flux (d) None of these
Last Answer : (c) Electric flux
Description : An inkjet printer uses in its operation: (a) Positrons (b) Neutrons (c) An electric charge (d) Photons
Last Answer : (c) An electric charge
Description : In case of two identical charges placed at certain distance, the electric lines of force are: (a) Curved (b) Straight lines (c) Both (a) and (b) (d) None of these
Last Answer : a) Curved
Description : The electric force between two charges placed in air is 2 Newton. When placed in a medium of ∈r = 80, the force reduced to: (a) 0.029 N (b) 0.025 N (c) 0.03 N (d) 0.04 N
Last Answer : (b) 0.025 N
Description : kWh meter is the electric meter that measures the amount of electrical _________ in kWh that was consumed in the house. (A) Energy (B) Current (C) Voltage (D) None of the above
Last Answer : kWh meter is the electric meter that measures the amount of electrical Energy in kWh that was consumed in the house.
Description : _______ electric power is the most common method used by electrical grids to transfer power. (A) One-phase (B) Two-phase (C) Three-phase (D) None of the above
Last Answer : Three-phase electric power is the most common method used by electrical grids to transfer power.
Description : Number of unknown internal forces in each member of a rigid jointed plane frame is (A) 1 (B) 2 (C) 3 (D) 6
Last Answer : (C) 3
Description : If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by (A) m + r + 2j (B) m - r + 2j (C) m + r - 2j (D) m + r - 3j
Last Answer : (C) m + r - 2j
Description : Origin of gravitational field is A. charges B. masses C. Earth's core D. matter
Last Answer : masses
Description : Why don't the internal electron forces of a star increase at the same rate as gravitational forces? -Space
Last Answer : In short, the degenerate electron pressure in the star depends upon the density of the gas in a specific way that has no direct dependence upon how gravity and density are related.
Description : The weakest of all fundamental forces is – (1) Gravitational force (2) Electrostatic force (3) Magnetic force (4) Nuclear force
Last Answer : (1) Gravitational force Explanation: In particle physics, fundamental interactions (sometimes called interactive forces or fundamental forces) are the ways that elementary particles interact with one another. ... weak interaction ("weak nuclear force"), and gravitation. All are non-contact forces.
Description : A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation? (A) Inertial and drag forces are important (B) Drag ... forces are important (C) Drag force and gravitational forces are important (D) None of the above
Last Answer : (B) Drag, gravitational and buoyancy forces are important
Description : Forces acting on a particle settling in fluid are __________ forces. (A) Gravitational & buoyant (B) Centrifugal & drag (C) Gravitational or centrifugal buoyant drag (D) External, drag & viscous
Last Answer : (C) Gravitational or centrifugal buoyant drag
Description : The weight of a body is due to (A) Centripetal force of earth (B) Gravitational pull exerted by the earth (C) Forces experienced by body in atmosphere (D) Gravitational force of attraction towards the centre of the earth
Last Answer : (D) Gravitational force of attraction towards the centre of the earth
Description : Which of the following types of soil is transported by gravitational forces? (A) Loess (B) Talus (C) Drift (D) Dune sand
Last Answer : Answer: Option B
Description : The center of pressure of a surface subjected to fluid pressure is the point (A) On the surface at which resultant pressure acts (B) On the surface at which gravitational force acts (C) At which all hydraulic forces meet (D) Similar to metacentre
Last Answer : Answer: Option A
Description : The Grand Unified Theory of the forces of nature combines three of the four forces. Which force is NOT included? w) gravitational x) electromagnetic y) weak nuclear z) strong nuclear
Last Answer : ANSWER: W -- GRAVITATIONAL
Description : Which of the following forces is nonconservative? w) gravitational force x) electrostatic force y) sliding frictional force z) restorative force of a spring
Last Answer : ANSWER: Y -- SLIDING FRICTIONAL FORCE