Determine power rating of an electric motor if it runs at 1440 rpm and line shaft transmits torque of 75 Nm. Assume Reduction ratio =1.6
বাংলাদেশ ব্যাংক - সহকারী পরিচালক (Engineering -Mechanical) 2019-01-11 — প্রশ্ন ও সমাধান
প্রতিটি প্রশ্নের নির্ভুল উত্তর ও ব্যাখ্যা একসাথে — সম্পূর্ণ ফ্রি।
Bb Ad — previous year question solution with answer & explanation (free)
How are the efficiencies of any heat engine (miu) and reversible heat engine (miuR) compared, when both are operating between same heat source and same heat sink?
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— irreversible > reversible... কী-অনুযায়ী।Which component of fluid velocity is responsible for transmission of power through aerodynamic machine?
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Tangential component।Which of the following components of reaction turbine increases the head on the turbine by an amount equal to the height of runner outlet above the tail race?
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Draft tube।Which of the following numbers is applicable in open hydraulic structure such as spillways, where gravitational force is predominant?
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Froude's number।The scales form in heat exchangers after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
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fouling factor।The ratio of shear modulus to the modulus of elasticity for a poisson's ratio of 0.4 will be
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।The bending moment on a section is maximum where shear force is
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zero — BM max where SF=0।A cantilever beam of length L carries a gradually varying load from zero at free and w per unit length at the fixed end. The maximum deflection lies at
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free end — max BM।Which type of gears has point contact between two mating gears?

