Description : Why grounding mat is important near ground switch operating handle and disconnecting switch operating handle?
Last Answer : Equipment operating handles deserve special attention because of the higher probability for co-incidence of adverse factors. For example, a. Hand operation equipment such as grounding switches and disconnecting ... both in order to bring down the values of touch potential and step potential.
Description : Why not high resistance for earth fault than using grounding transformer & resistor 0.45 ohms?
Last Answer : It is mechanically unwide. Difficult to manufacture.
Description : When the voltage remains constant, and the resistance increases in a series circuit, current flow _____________. A. decreases B. remains the same C. increases D. increases by the square
Last Answer : Answer: A
Description : When the voltage remains constant and the resistance is increased in a series circuit, the flow of current _____________. A. increases by the square of the original value B. increases C. remains the same D. decreases
Last Answer : Answer: D
Description : A pipe is defined as 'hydraulically smooth', if the friction factor (A) Is not a function of Reynolds number (B) For a given Reynolds number remains constant even on further smoothening of the pipe (C) Is zero irrespective of the Reynolds number (D) None of these
Last Answer : (B) For a given Reynolds number remains constant even on further smoothening of the pipe
Description : In a period from Li to F, ionisation potential – (1) cannot be predicted (2) increases (3) decreases (4) remains same
Last Answer : (1) cannot be predicted
Description : In forward bias, the width of potential barrier __________ (a) Increases (b) decreases (c) remains same (d) no effect
Last Answer : (b) decreases
Description : In a period from Li to F, ionisation potential (1) cannot be predicted (2) increases (3) decreases (4) remains same
Last Answer : cannot be predicted
Description : When two gases are mixed, the entroру (a) Remains constant (b) Decreases (c) Increases (d) Becomes zero
Last Answer : Ans:(c)
Description : When water freezes its density – (1) Decreases (2) Becomes Zero (3) Remains constant (4) Increases
Last Answer : (1) Decreases Explanation: Water at ordinary temperatures contracts and in-creases in density as it is cooled, like most substances. But at about 4°C it reaches a maximum density and then decreases in density as it approaches the freezing point. This is referred to as anomalous property of water.
Description : With the increase of pressure, the boiling point of any substance - (1) Increases (2) Decreases (3) Remains Same (4) Becomes zero
Last Answer : (1) Increases Explanation: The temperature stays the same until all the liquid has vaporized. As the temperature of a liquid rises, the pressure of escaping vapor also rises, and at the boiling point ... vapor is equal to that exerted on the liquid by the surrounding air, causing bubbles to form.
Description : With the increase of pressure, the boiling point of any substance – (1) Increases (2) Decreases (3) Remains Same (4) Becomes zero
Description : By increasing the current, the drift velocity A. decreases B. increases C. remains constant D. becomes zero
Last Answer : remains constant
Description : In an oil-lubricated journal bearing, coefficient of friction between the journal and the bearing. [IES-1995] (a) Remains constant at all speeds. (b) is minimum at zero speed and increases ... speed. (d) becomes minimum at an optimum speed and then increases with further increase in speed.
Last Answer : (d) becomes minimum at an optimum speed and then increases with further increase in speed.
Description : As the ball falls towards the ground, its velocity A. increases B. decreases C. remains constant D. becomes zero
Last Answer : increases
Description : An ideal gas is compressed in a cylinder so well insulated that there is essentially no heat transfer. The temperature of gas a. Remains constant b. increases c. decreases d. is basically zero
Description : .If we narrow the distance between two slits in Young’s experiment the fringes width __________. A. Increases B. Decreases C. Remains same D. becomes zero
Last Answer : B. Decreases
Description : When water freezes its density (1) Decreases (2) Becomes Zero (3) Remains constant (4) Increases
Last Answer : Decreases
Description : The rating of the Transformer __ when the supply frequency is increased: a) Remains unchanged b) Increases c) Decreases d) None of the above
Last Answer : Ans: B
Description : When load factor and diversity factor increases ___________ a) cost of electricity decreases b) cost of electricity also increases c) cost of electricity remains same d) cost of electricity increases exponential
Last Answer : Ans: A
Description : When the length and cross sectional area of a wire are both tripled, the resistance _____________. A. increases nine fold B. increases three fold C. remains the same D. decreases six fold
Last Answer : Answer: C
Description : When the current in a power transmission line is increased, the power loss _____________. A. increases as the square of the current B. decreases as the square root of the current C. remains the same, as it is independent of current flow D. increases in direct proportion as the current
Description : A 220/440 V, 50 Hz, 5 KVA, single phase transformer operates on 220V, 40Hz supply with secondary winding open circuited. Then (A) Both eddy current and hysteresis losses decreases. (B) Both ... same but hysteresis loss increases. (D) Eddy current loss increases but hysteresis loss remains the same.
Last Answer : (A) Both eddy current and hysteresis losses decreases.
Description : Ground resistance should be designed such that: a) grounding resistance should be as low as possible b) grounding resistance should be as high as possible c) grounding resistance should be always zero d) none of the above
Description : If the voltage applied to a moving disk frequency meter decreases, while the applied frequency remains the same, the frequency indication will _____________. A. increase B. decrease C. remain the same D. oscillate
Description : If speed of rotation of the earth increases, the weight of the body – (1) decreases (2) increases (3) remains the same (4) may increase or decrease
Last Answer : (1) decreases Explanation: The weight of a body on the earth is the amount of gravitational pull on it exerted by the earth. Similarly there is another force exerted on a body on earth, that ... under the influence of the centrifugal force and the weight of the body will seem to have decreased.
Description : If speed of rotation of the earth increases, the weight of the body (1) decreases (2) increases (3) remains the same (4) may increase or decrease
Last Answer : decreases
Description : Due to the dramatic increases Mat Sanderson has seen in the cost of having his industrial salespeople visit customers, he looks into using --------- as a cost reduction technique. A)publicity B)advertising C)point-of-purchase displays D)packaging E)telemarketing
Last Answer : E)telemarketing
Description : As we go from Equator to North pole the value of `S, the acceleration due to gravity (1) remains the same (2) decreases (3) increases (4) None of the above
Last Answer : (3) increases Explanation: The acceleration due to gravity of earth is the rate of increase of velocity of a body falling freely towards the earth. At a given place, the value of acceleration due to gravity ... out at the equator. The value of 'g' is minimum at the equator and maximum at the poles.
Description : Due to rusting the weight of iron - (1) Decreases (2) Increases (3) Remains the same (4) Uncertain
Last Answer : (2) Increases Explanation: Corrosion of a block of metal - Iron to Iron Oxide (rust), Aluminum to Bauxite, Cooper to Cupric-oxide, or otherwise - does not change the weight of the metal in the system.
Description : Due to atmospheric refraction, apparent length of the day (a) increases (b) decreases (c) remains the same (d) all of these
Last Answer : (a) increases
Description : As we go from Equator to North pole the value of ‘g’, the acceleration due to gravity (1) remains the same (2) decreases (3) increases (4) None of the above
Description : The tension in the wire rope supporting a lift moving with a uniform velocity a.Is more when the lift is moving upwards b.Is more when the lift is moving downwards c.Is less when the lift ... down-wards d.Is less when the lift is moving upwards e.Remains constant irrespective of the lift movement
Last Answer : e. Remains constant irrespective of the lift movement
Description : The plasma protein bound fraction of a drug: A. Contributes to the response at the given moment B. Remains constant irrespective of the total drug concentration C. Remains constant irrespective of the disease state D. Is not available for metabolism unless actively extracted by the liver
Last Answer : D. Is not available for metabolism unless actively extracted by the liver
Description : The plasma half life of aspirin (along with salicylic acid released from it): A. Remains constant irrespective of dose B. Is longer for antiinflammatory doses compared to that for analgesic ... for antiinflammatory doses compared to that for analgesic dose D. Can be shortened by acidifying urine
Last Answer : B. Is longer for antiinflammatory doses compared to that for analgesic dose
Description : Identify the correct statement for air compressors. a. For every 5.5oC drop in the inlet air temperature, the increase in energy consumption is by 2%. b. For every 4 oC rise in ... increase in energy consumption is by 1% d. The energy consumption remains same irrespective of inlet air temperature
Last Answer : c. For every 4 oC rise in the inter air temperature, the increase in energy consumption is by 1%
Description : Which of the following activities occurs during the charging process of a lead-acid storage battery? A. The specific gravity of the acid increases. B. Both plates change chemically to lead sulfate. C. The specific gravity of the acid decreases. D. Hydrogen gas is absorbed.
Description : Which of the following statements is true concerning a stepdown transformer in an operating AC power circuit? A. Voltage and current will both be increased. B. Voltage and current will both be decreased C. Voltage decreases as current increases. D. Voltage increases as current decreases.
Description : As the voltage of transmission increases, the volume of conductor (A) increases. (B) does not change. (C) decreases. (D) increases proportionately.
Last Answer : Ans: C Decreases due to skin effect.
Description : A job has four pages A, B, C, D and the main memory has two page frames only. The job needs to process its pages in following order: ABACABDBACD Assuming that a page interrupt occurs when a new page is brought in the main ... replacement algorithms are (A) 9 and 7 (B) 7 and 6 (C) 9 and 8 (D) 8 and 6
Last Answer : (C) 9 and 8
Description : Which of the following statements represents the action of a megohmmeter when testing a small capacitor in good condition? A. The meter pointer should immediately swing to the maximum resistance value ... . D. The meter pointer should immediately swing to a high reading and gradually decrease.
Last Answer : Answer: B
Description : Can I plug my mat Q. Can I plug my mat and sheet into one splitter co and sheet into one splitter cord without splitting rd without splitting the potential of Earthing in the potential of Earthing in half for each product?
Last Answer : The use of a splitter does not reduce the potential of Earthing at ial of Earthing at all for either product.
Description : The law of conservation of mechanical energy is valid a.Irrespective of the nature of force field b.Only in gravitational field c.Only if the total work done by the particle in moving around in a closed trajectory is zero d.Only if the force is tangential to the trajectory e.None of the above
Last Answer : c. Only if the total work done by the particle in moving around in a closed trajectory is zero
Description : The normal stress is same in all directions at a point in a fluid (A) Only when the fluid is frictionless (B) Only when the fluid is incompressible and has zero viscosity (C) When there ... to an adjacent layer (D) Irrespective of the motion of one fluid layer relative to an adjacent layer
Last Answer : Answer: Option C
Description : A small weight put on the pressure cooker increases the pressure of the steam because (a) It is air tight (b) The area of contact is very small (c) The density of metal is very high (d) The pressure builds up irrespective of the weight placed
Last Answer : Ans:(b)
Description : In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are?
Last Answer : In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are hysteresis and eddy current losses.
Description : Which of the following statement is false? a.The potential energy of a particle has the form Ep = k2x. The force acting on the particle is constant (k is a constant) b.The linear velocity of ... zag path while ascending a steep hill e.The density of milk decreases when cream is taken out of milk
Last Answer : e. The density of milk decreases when cream is taken out of milk
Description : The degree of the B-spline with varying knot vectors a.Increases with knot vectors b.Decreases with knot vectors c.Remains constant d.none of the above
Last Answer : a.Increases with knot vectors