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In a group of 50 students who either want to join defence forces or paramilitary forces, out of which 40 students want to join defence forces and 30 want to join paramilitary forces. Find the number of students who want to join only defence forces.
Which of the following types of inter molecular interactions or forces is/are called van der Waals forces? 1. London forces 2. Dipole - dipole forces 3. Dipole - induced dipole forces 4. Hydrogen bonding Choose the correct code:
The system of forces acting on the aircraft are propulsive forces, aerodynamic forces, gravitational forces and these result in inertial forces.
Statement 1: Unsteady state heat transfer equation can be used when there is negligible internal resistance. Statement 2: Unsteady state heat transfer equation can be used for liquid food items which are well stirred, because, temperature gradient within won’t be there.
Unsteady stresses are caused due to interaction of rotating blades with ___________
In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?
In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?
Which of the following statements are associated with the complete dynamic balancing of rotating systems? 1. The resultant couple due to all inertia forces is zero. 2. Support reactions due to forces are zero but not due to couples 3. The system is automatically statically balanced. 4. Centre of masses of the system lies on the axis of rotation.
Which of the following statements are associated with complete dynamic balancing of rotating systems? 1. Resultant couple due to all inertia forces is zero. 2. Support reactions due to forces are zero but not due to couples. 3. The system is automatically statically balanced. 4. Centre of masses of the system lies on the axis of rotation.
Consider the following statements: I. Anaemia is a disease which is caused by the deficiency of iron. II. Beri Beri is caused due to deficiency of Vitamin B1. III. Bleeding diseases is caused due to deficiency of Vitamin E. IV. The disease which leads to the abnormal enlargement of thyroid gland is goitre. Which of these is/are correct?