Description : In actual machines a.Mechanical advantage is unity b.Mechanical advantage is greater than velocity ratio c.Mechanical advantage is less than velocity ratio d.Mechanical advantage is less than unity e.Mechanical advantage is equal to velocity ratio
Last Answer : c. Mechanical advantage is less than velocity ratio
Description : If the input force on a simple machine is 2 N and the output force is 4 N what is it and mechanical advantage?
Last Answer : 80 Is the Output force
Description : What equation would you to calculate the ideal mechanical advantage of a wheel and axle if the input force is on the axle?
Last Answer : Feel Free to Answer
Description : A pulley has a mechanical advantage of 1. What does this tell you about the size and direction of the input and output forces?
Last Answer : its like a input or output
Description : The advantage of dry compression is that (a) it permits higher speeds to be used (b) it permits complete evaporation in the evaporator (c) it results in high volumetirc and mechanical efficiency (d) all of the above
Last Answer : Ans: d
Description : A single fixed pulley is used to draw water from a well because – (1) efficiency is 100% (2) velocity ratio is low (3) mechanical advantage is high (4) force is applied in a convenient direction
Last Answer : (4) force is applied in a convenient direction Explanation: A single fixed pulley is used to lift a load upwards by applying efforts downward's. The load and effort move equal distance but in opposite ... apply effort in downward direction. They are used on flag-poles and to draw water from a well.
Description : In the levers of third type, the mechanical advantage is __________ one. (A) Less than (B) Equal to (C) More than (D) None of these
Last Answer : (A) Less than
Description : In actual machines (A) Mechanical advantage is greater than velocity ratio (B) Mechanical advantage is equal to velocity ratio (C) Mechanical advantage is less than velocity ratio (D) Mechanical advantage is unity
Last Answer : (C) Mechanical advantage is less than velocity ratio
Description : In ideal machines (A) Mechanical advantage is greater than velocity ratio (B) Mechanical advantage is equal to velocity ratio (C) Mechanical advantage is less than velocity ratio (D) Mechanical advantage is unity
Last Answer : (B) Mechanical advantage is equal to velocity ratio
Description : The actual mechanical advantage of a block and tackle is 5. The ideal mechanical advantage is 6. How many strands support the mass to be lifted?
Last Answer : ANSWER: 6
Description : A single fixed pulley is used to draw water from a well because (1) efficiency is 100% (2) velocity ratio is low (3) mechanical advantage is high (4) force is applied in a convenient direction
Last Answer : force is applied in a convenient direction
Description : Which of these are not Not a source pf mechanical weathering?
Last Answer : Hydrolysis A+LS
Description : Which of the following is the correct statement of the second law of thermodynamics? A. It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy ... energy, which can be obtained from a given quantity of heat energy. D. all of the above
Last Answer : Answer: D
Description : The speed of any mechanical wave as it propagates through a medium is dependent mainly on the A. frequency of the wave source B. wavelength C. period of the wave D. type of medium through which the wave travels E. amplitude
Last Answer : D. type of medium through which the wave travels
Description : What is one advantage a primary source has over secondary source?
Last Answer : A secondary source summarizes complex subjects by synthesizing multiple sources.
Description : What is the advantage of widlar current source over constant current source?
Last Answer : Using constant current source output current of small magnitude(microamp range) is not attainable due to the limitations in chip area. Widlar current source is useful for obtaining small output currents.Sensitivity of widlar current source is less compared to constant current source.