A material is said to be perfectly elastic if
(A) It regains its original shape on removal of the load
(B) It regains its original shape partially on removal of the load
(C) It does not regain its original shape at all
(D) None of these
Description : At yield point of a test piece, the material (A) Obeys Hooke's law (B) Behaves in an elastic manner (C) Regains its original shape on removal of the load (D) Undergoes plastic deformation
Last Answer : (D) Undergoes plastic deformation
Description : A member which does not regain its original shape after removed of load producing deformation is said (A) Plastic (B) Elastic (C) Rigid (D) None of these
Last Answer : (A) Plastic
Description : The tendency of a deformed solid to regain its actual proportions instantly upon unloading known as ______________ a) Perfectly elastic b) Delayed elasticity c) Inelastic effect d) Plasticity
Last Answer : a) Perfectly elastic
Description : 48. A perfectly elastic body (a) Can move freely (b) Has perfectly smooth surface (c) Is not deformed by any external surface (d) Recovers its original size and shape when the deforming force is removed.
Last Answer : d) Recovers its original size and shape when the deforming force is removed.
Description : A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material? (A) Steel (B) Glass (C) Rubber (D) Brass
Last Answer : Option A
Description : If a soil undergoes a change in shape and volume by application of external loads over it, but recovers its shape and volume immediately after removal of the load, the property of the soil is said to ... Resilience of soils (B) Elasticity of soils (C) Compressibility of soils (D) None of these
Last Answer : Answer: Option B
Description : )When percentage change in demand for a commodity is less than percentage change in its price, then demand is said to be - (1) Highly elastic (2) Inelastic (3) Relatively elastic (4) Perfectly inelastic
Last Answer : (2) Inelastic Explanation: When the percentage change in quantity demanded is less than the percentage change in price, then the demand for the commodity is said to be inelastic. Price elasticity of demand refers to the degree of responsiveness of quantity demanded to change in price.
Description : When percentage change in demand for a commodity is less than percentage change in its price, then demand is said to be (1) Highly elastic (2) Inelastic (3) Relatively elastic (4) Perfectly inelastic
Last Answer : Inelastic
Description : The property by which a body returns to its original shape after removal of the force, is called (A) Plasticity (B) Elasticity (C) Ductility (D) Malleability
Last Answer : (B) Elasticity
Description : If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following: (A) Q = S + F (B) Q = S - F (C) Q = F - S (D) Q = S × F
Last Answer : (D) Q = S × F
Description : Which of the following are true about plasticity? a) Permanent Deformation b) Ability to retain deformation under load or after removal of load c) Plastic deformation is greater than elastic deformation d) All of the mentioned
Last Answer : d) All of the mentioned
Description : The stress at which extension of a material takes place more quickly as compared to the increase in load, is called (A) Elastic point (B) Plastic point (C) Breaking point (D) Yielding point
Last Answer : (D) Yielding point
Description : Pick up the correct statement from the following: (A) The distance of the eccentric axial load from the C.G. beyond which tension develops, is known as kern distance (B) In visco ... (C) An orthotropic material has different properties in three mutually perpendicular directions (D) All the above
Last Answer : (D) All the above
Description : In the heating process of the ________type a simple method of temperature control is possible by means of a special alloy which loses its magnetic properties at a particular high temperature and regains ... ) core type induction furnace (C) coreless induction furnace (D) high frequency eddy current
Last Answer : Ans: D Magnetic property of alloy changes with change of the temperature and Heat is produced due to eddy current = i2R and i α f2
Description : An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice. (A) Free (B) Partially (C) Full (D) None of these
Last Answer : Answer: Option C
Description : In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be (A) Running full (B) Running free (C) Partially running full (D) Partially running free
Description : A thick film bearing is a bearing (A) Where the surfaces of journal and the bearing are completely separated by a film of lubricant (B) Where the surfaces of journal and the bearing are partially ... are separated by a film created by elastic deflection of parts (D) Where there is no lubricant
Last Answer : (A) Where the surfaces of journal and the bearing are completely separated by a film of lubricant
Description : A thin film bearing is a bearing (A) Where the surfaces of journal and the bearing are completely separated by a film of lubricant (B) Where the surfaces of journal and the bearing are partially ... are separated by a film created by elastic deflection of parts (D) Where there is no lubricant
Last Answer : (B) Where the surfaces of journal and the bearing are partially separated by a film of lubricant and there is partial metal to metal contact
Description : A zero film bearing is a bearing (A) Where the surfaces of journal and the bearing are separated by a thick film of lubricant (B) Where the surfaces of journal and the bearing are partially ... bearing are separated by a film created by elastic deflection of parts (D) Where there is no lubricant
Last Answer : (D) Where there is no lubricant
Description : Define coefficient of restitution and obtain its value for an elastic collision and a perfectly inelastic collision.
Last Answer : Define coefficient of restitution and obtain its value for an elastic collision and a perfectly inelastic collision.
Description : Any factor of production can earn economic-rent, when its supply will be - (1) Perfectly elastic (2) Perfectly inelastic (3) Elastic in nature (4) All of the above
Last Answer : (2) Perfectly inelastic Explanation: Economic rent is the revenue that can be earned from the land or other natural resource for which there is a fixed supply - as economists like to say, the supply ... inelastic, the amount of its supply does not depend on any income that the resource can produce.
Description : Any factor of production can earn economic-rent, when its supply will be (1) Perfectly elastic (2) Perfectly inelastic (3) Elastic in nature (4) All of the above
Last Answer : Perfectly inelastic
Description : where by exercising the right of stoppage in transit the unpaid seller regains the possession of goods, then a) unpaid seller lien revives b)contract of sale in terminated c) unpaid seller lien does not revive d)sellers possession in unlawful
Last Answer : c) unpaid seller lien does not revive
Description : A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be a.2.5 m/s b.zero c.5 m/s d.10 m/s e.107 dynes
Last Answer : c. 5 m/s
Description : For perfectly elastic bodies, the value of the coefficient of restitution is a.1 b.0.372 c.0.5 d.Zero e.Any value between 0 and 1
Last Answer : a. 1
Description : For perfectly elastic bodies the value of the coefficient of restitution is a.0.707 b.0.5 c.1 d.0.25 e.Zero
Last Answer : a. 0.707
Description : Economic rent does not arise when the supply of a factor unit is - (1) Perfectly inelastic (2) Perfectly elastic (3) Relatively elastic (4) Relatively inelastic
Last Answer : (2) Perfectly elastic Explanation: Economic rent in the sense of surplus over transfer earnings arise when the supply of the factor units is less than perfectly elastic or not perfectly elastic. When ... , at a given price or remuneration, the entrepreneur can engage any number of factor units.
Description : The demand for necessities is - (1) elastic (2) perfectly inelastic (3) inelastic (4) perfectly elastic
Last Answer : (2) perfectly inelastic Explanation: Inelastic demand means that if the price changes, the quantity demanded will not change much. The more necessary a good is, the lower the elasticity, as people ... it no matter the price. Necessities such as water are likely to have perfectly inelastic demand.
Description : If the change in demand for a commodity is at a faster rate than change in the price of the commodity, the demand is - (1) perfectly inelastic (2) elastic (3) perfectly elastic (4) inelastic
Last Answer : (3) perfectly elastic Explanation: If quantity demanded changes by a very large percentage as a result of a tiny percentage change in price, then the demand is said to be perfectly elastic ... in this extreme case would be undefined but it approaches negative infinity as demand becomes more elastic.
Description : Elasticity (e) expressed by the formula 1 > e > 0 is - (1) Perfectly elastic (2) Relatively elastic (3) Perfectly inelastic (4) Relatively inelastic
Last Answer : (4) Relatively inelastic Explanation: Elasticity (e) expressed by the formula 1 > e > 0 is relatively inelastic. Elasticity is responsiveness of one variable to a change in another, when other conditions are held constant.
Description : A horizontal demand curve is - (1) relatively elastic (2) perfectly inelastic (3) perfectly elastic (4) of unitary elasticity
Last Answer : (3) perfectly elastic Explanation: The demand curve facing a perfectly competitive firm is flat or horizontal. This is because all firms in perfect competition are by definition selling an identical (homogeneous) ... of the curve is zero, it is impossible for the price to change in the market.
Description : The demand curve facing a perfectly competitive firm is - (1) downward sloping (2) perfectly inelastic (3) a concave curve (4) perfectly elastic
Last Answer : (4) perfectly elastic Explanation: A perfectly competitive industry is comprised of a. large number of relatively small firms that sell identical products. Each perfectly competitive firm is so small ... at the going market price. This translates into a horizontal or perfectly elastic demand curve.
Description : In a perfectly elastic collision, the relative speed of approach and relative speed of separation are A. equal B. in equal C. zero D. infinite
Last Answer : equal
Description : In a perfectly elastic collision, momentum and energy are A. not conserved B. conserved C. becomes zero after collision D. equal before collision
Last Answer : conserved
Description : If the demand curve confronting an individual firm is perfectly elastic, then firm is A.Price taker B.Adjust output C.Adjust price D.All of these Answer Repor
Last Answer : A.Price taker
Description : Kinetic theory of gases assumes that the collisions between the molecules are (a) perfectly elastic (b) perfectly inelastic (c) partly elastic (d) partly inelastic (e) partly elastic and partly inelastic.
Last Answer : Answer : a
Description : The demand curve of a Monopoly firm is – (a) Same that of a firm in a perfect competition ; (b) Same as that of the total market demand; (c) Non-exist ; (d) Perfectly elastic
Last Answer : (b) Same as that of the total market demand;
Description : Very short period is the market condition where the supply remain perfectly (a) Elastic ; (b) Inelastic ; (c) Unity elastic ; (d) Elasticity less than 1
Last Answer : (b) Inelastic ;
Description : A perfectly elastic supply curve will be (a) Parallel to Y axis or a vertical line ; (b) Parallel to X axis; (c) U shaped ; (d) Downward sloping
Last Answer : the aggregate demand curve
Description : If the consumption of a product can be postponed for the time being (a) The demand for the product will be inelastic (b) The demand for the product will be relatively elastic (c) The demand for the product will be perfectly elastic (d) The demand for the product will be perfectly inelastic
Last Answer : (b) The demand for the product will be relatively elastic
Description : The demand curve facing a perfectly competitive firm is (1) downward sloping (2) perfectly inelastic (3) a concave curve (4) perfectly elastic
Last Answer : perfectly elastic
Description : The demand for necessities is (1) elastic (2) perfectly inelastic (3) inelastic (4) perfectly elastic
Last Answer : perfectly inelastic
Description : Elasticity (e) expressed by the formula l > e > 0 is (1) Perfectly elastic (2) Relatively elastic (3) Perfectly inelastic (4) Relatively inelastic
Last Answer : Relatively inelastic
Description : A horizontal demand curve is (1) ralatively elastic (2) perfectly inelastic (3) perfectly elastic (4) of unitary elasticity
Description : Economic rent does not arise when the supply of a factor unit is (1) Perfectly inelastic (2) Perfectly elastic (3) Relatively elastic (4) Relatively inelastic
Last Answer : Perfectly elastic
Description : If the change in demand for a commodity is at a faster rate than change in the price of the commodity, the demand is (1) perfectly inelastic (2) elastic (3) perlectly elastic (4) inelastic
Last Answer : perlectly elastic
Description : Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils (A) Cause cholesterol build up and blood clotting (B) Are prone to rancid oxidation (C ... (as their complete removal is very difficult) (D) Have affinity to retain harmful sulphur compounds
Last Answer : (A) Cause cholesterol build up and blood clotting
Description : The phases of the moon are partially the result of the------? A. Changes in the shape of the moon B. Revolution of the moon around the earth (Answer) C. Variations in the moon’s gravitation D. Variations in the speed of rotation of the moon
Last Answer : B. Revolution of the moon around the earth (Answer)
Description : A material no longer behaves elastically beyond (A) Plastic limit (B) Limiting load (C) Elastic limit (D) Breaking load
Last Answer : (C) Elastic limit
Description : At yield point' of a copper wire A. the load hasn't exceeded the elastic limit yet; so, Hooke's law applies B. the load has already exceeded the elastic limit and the material has become ... stage has passed and the wire has snapped already D. Like Brass and Bronze, Copper has no yield poin
Last Answer : the load has already exceeded the elastic limit and the material has become plastic