Related Questions

Opponents of laws that require automobile drivers and passengers to wear seat belts argue that in a free society people have the right to take risks as long as the people do not harm the others as a result of taking risks.As a result,they conclude that it should be each person's decision whether or not to wear a seat belt. Which of the following, if true,most seriously weakens the conclusion drawn above ?
A Many new cars are built with seat belts that automatically fasten when someone sits in the font seat.
B Automobile insurance rates for all automobile owners are higher because of the need to pay for the increased injuries or deaths of people not wearing seat belts.
C Passengers in airplanes are required to wear seat belts during takeoffs and landings.
D The rate of automobile fatalities in districts that do not have mandatory seat-belt laws is greater than the rate of fatalities in districts that do have such laws.
In a row in the theatre the seats are numbered consecutively from T1 to T50. Sumon is sitting in seat T17 and Sajib is sitting in seat T39. How many seats are there between us?
A 23
B 21
C 22
D 20
Please _____ sure your seat belt is fastened for take off .
A get
B make
C keep
D be
Passengers must___their seat-belt while travelling by air.
A knot
B hold
C fasten
D bent
The power transmitted by a belt is maximum when the maximum tension in the belt is _________ of centrifugal tension.
A One-third
B Two-third
C Double
D Three times
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.
A Equal to
B Less than
C Greater than
D None of these
In multi V-belt transmission, if one of the belt is broken, we have to change the
A Broken belt
B Broken belt and its adjacent belts
C All the belts
D There is no need of changing any one as remaining belts can take care of transmission of load
A pulley and belt in a belt drive form a
A Cylindrical pair
B Turning pair
C Rolling pair
D Sliding pair
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to
A Reduce vibration
B Reduce slip
C Ensure uniform loading
D Ensure proper alignment
The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length)
A $$\frac{{\text{T}}}{3}$$
B $$\frac{{{\text{Tg}}}}{3}$$
C $$\sqrt {\frac{{\text{T}}}{{3{\text{m}}}}} $$
D $$\sqrt {\frac{{3{\text{m}}}}{{\text{T}}}} $$

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