[{"id":151769,"question":"The number of \"Earth Stations\" which transmit signals to satellites and receive signals fro them are","choices":[{"text":"3","value":"A"},{"text":"24","value":"B"},{"text":"126","value":"C"},{"text":"200","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151768,"question":"The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec<sup>-2</sup>comes out to be","choices":[{"text":"980 N","value":"A"},{"text":"580 N","value":"B"},{"text":"1380 N","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151767,"question":"If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will","choices":[{"text":"Increase","value":"A"},{"text":"Decrease","value":"B"},{"text":"Remain constant","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151086,"question":"The number of countries who manage the largest satellite system is:","choices":[{"text":"3","value":"A"},{"text":"24","value":"B"},{"text":"126","value":"C"},{"text":"200","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151084,"question":"Satellites are held in orbits around Earth by its:","choices":[{"text":"Gravitational field","value":"A"},{"text":"Magnetic field","value":"B"},{"text":"Own orbital motion","value":"C"},{"text":"Own spin motion","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151083,"question":"Which one is related to angular motion:","choices":[{"text":"Moment of a force","value":"A"},{"text":"Moment of inertia","value":"B"},{"text":"Moment of momentum","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151082,"question":"Angular momentum is a:","choices":[{"text":"vector quantity","value":"A"},{"text":"Imaginary quantity","value":"B"},{"text":"Complex Quantity","value":"C"},{"text":"Scalar Quantity","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151081,"question":"Direction of angular momentum is determined by:","choices":[{"text":"Right hand rule","value":"A"},{"text":"Head to tail rule","value":"B"},{"text":"Left hand rule","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151079,"question":"A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:","choices":[{"text":"10 m","value":"A"},{"text":"12 m","value":"B"},{"text":"13 m","value":"C"},{"text":"15 m","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151076,"question":"Which of the following pairs does not have identical dimensions?","choices":[{"text":"Torque and energy","value":"A"},{"text":"Energy and work","value":"B"},{"text":"Momentum and impulse","value":"C"},{"text":"Mass and moment of inertia","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151075,"question":"Moment of inertia depends upon:","choices":[{"text":"Mass","value":"A"},{"text":"Selection of axis of rotation","value":"B"},{"text":"Both of them","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151073,"question":"The center of mass of a sphere lies at:","choices":[{"text":"The axis of the sphere","value":"A"},{"text":"Circumference of sphere","value":"B"},{"text":"Center of the sphere","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151071,"question":"When a body moves with a constant speed in a circle:","choices":[{"text":"No work is done on it","value":"A"},{"text":"No acceleration is produced in the body","value":"B"},{"text":"Velocity remains constant","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151070,"question":"______ plays the same role during angular motion as played by the mass in linear motion","choices":[{"text":"Torque","value":"A"},{"text":"Angular Momentum","value":"B"},{"text":"Moment of a force","value":"C"},{"text":"Moment of inertia","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151066,"question":"Centripetal acceleration is also called ______ acceleration","choices":[{"text":"Tangential","value":"A"},{"text":"Radial","value":"B"},{"text":"Angular","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151056,"question":"One radian is:","choices":[{"text":"Greater than one degree","value":"A"},{"text":"Less than one degree","value":"B"},{"text":"Equal to degree","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151055,"question":"When angular acceleration is positive, the body rotates:","choices":[{"text":"Slower","value":"A"},{"text":"Slowest","value":"B"},{"text":"Faster","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151054,"question":"Direction of motion _________ in circular motion","choices":[{"text":"Changes off and on","value":"A"},{"text":"Changes continously","value":"B"},{"text":"Does not change","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":2}]