Related Questions

A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.
A Half
B Same
C Double
D Four times
Number of working strokes per min. for a four stroke cycle engine are _________ the speed of the engine in r.p.m.
A Equal to
B One-half
C Twice
D Four-times
Thermal efficiency of a two stroke cycle engine is _________ a four stroke cycle engine.
A Equal to
B Less than
C Greater than
D None of these
Theoretically, a four stroke cycle engine should develop _________ power as that of a two stroke cycle engine.
A Half
B Same
C Double
D Four times
In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.
A equal to
B below
C above
D middle
For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine.
A Equal to
B Twice
C Three times
D Four times
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
Two stroke engine compared to a four stroke engine has
A Higher efficiency
B Less fuel consumption
C Higher power to weight ratio
D Lower initial cost
400°C তাপমাত্রায় N2O5   (g) - এ বিয়োজনের অগ্রগতি পরিমাপ করার সময় দেখা গেল যে 10 min পর বিক্রিয়া মাধ্যমের চাপ 80 min Hg। বিক্রিয়া মিশ্রণের আদি চাপ 60mm Hg হলে, 10 min সময় কত শতাংশ N2O5  বিয়োজিত হয়েছে?
A 66.6%
B 34.37%
C 50%
D 25%
If 1/2 of the air in a tank is removed with each stroke of a vacuum pump, what fraction of the original amount of air has been removed after four strokes ?
A 15/16
B 7/8
C 1/4
D 1/8

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