রক্তের কোনকণিকা বৃদ্ধি পেলে ব্লাড ক্যান্সার হয়?
কোনটি হৃদ রোগের কারণ-
হিমোগ্লোবিন কোন জাতীয় পদার্থ -
মানবদেহে পানির শতকরা কত ভাগ?
বৈদ্যুতিক বাল্বের পিরামেন্ট যে ধাতু দিয়ে তৈরি তা হলে-
হাড় ও দাঁতকে মজবুত করে-
এক অনু সালফিউরিক এসিডে কতটি পরমাণু আছে?
কোন মৌলিক ধাতু সাধারণ তাপমাত্রায় তরল থাকে?
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?
which component of fluid velocity is responsible for transmission of power through aerodynamic machine?
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 ?
which of the following number is applicable in open hydraulic structure such as spillways , where gravitational force is predominant ?
The scales form in heat exchanges 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 .
The ratio of shear modulus to the modulus of elasticity for a poisson's ratio of 0.4 will be
The bending moment on a section is maximum where shear force is
A cantilever beam of length L carries a gradually varying load form zero at free and w per unit length at the fixed end. The maximum deflection lies at
The cavitation in a hydraulic machine is mainly due to
The operation of making a cone -shaped enlargement of the end of a hole is known as
which type of gears has point contact between two mating gears?
The process of removing metal by a cutter which is rotated against the direction of travel of the workpiece, is called