Electrical Engineering Orientation/Physics Science Laws

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Important Notes & Instructions on Answering the questions

 * The multiple choice questions are meant to test overall knowledge and literacy on basic elementary Physics. Indepth Physics required for a particular Engineering field will be dealt with during undergraduate studies.


 * Only SI units are used in this questionaire


 * Select the most correct answer of the four possible answers to each question.
 * Attempt all questions before submitting to view your results.
 * Use of calculator allowed.


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{| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:98%" Science Aptitude test1: Questionaire
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" A body moving at constant velocity on a horizontal plane has a number of unequal forces acting on it. Which one of the following is true? - (A) Atleast two of the forces must be acting in the same direction. + (B) The resultant force is zero. - (C) Friction between the body and the Horizontal plane is the resultant force. - (D) The vector sum of the forces causes the causes the body's velocity to increase.
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{When a lamp is connected to a 220V source, the power dissipated is P. The same lamp is connected to a 110V source. Assuming that the resistance of the lamp remains constant, which one of the following is the new power dissipated? - (A) 0. - (B) $$\frac{1}{2}P$$. + (C) $$\frac{1}{4}P$$. - (D) P.
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" In the circuit shown, switch S is closed and internal resistance of the battery is negligible. How will the Ammeter and the Voltmeter readings respectively be affected if switch S is opened? - (A) Increase ; Decrease - (B) Decrease ; Decrease - (C) Increase ; No change + (D) Decrease ; No change
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" A car travels along a straight road. Due to an oil leak spilling at a constant rate the following pattern of oil drops is formed on the road. During which sections did the car travel faster? - (A) AB & EF + (B)  BC & EF - (C)  CD & GH - (D)  AB & BC
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" You are standing in a train carriage moving west towards your metro station. The train suddenly brakes. You will continue to move westwards due to ... - (A) The inertia of the train. + (B) Your inertia. - (C) The sum of the above inertias. - (D) The braking force on you.
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" Betty and Cindy each weigh 100kg and 110kg respectively on earth. They both fly to the moon on board NASA space shuttle. On-board the shuttle, their weights are measured again. Which of the following readings are the most probable results? - (A) Betty: 100kg ; Cindy: 110kg - (B) Betty: 200kg ; Cindy: 220kg + (C) They are weightless. - (D) None of the above
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" Betty and Cindy are now taken to the moon. On the moon their weights are measured again. Which of the following readings are the most probable results? - (A) Betty: 100kg ; Cindy: 110kg + (B) Betty: 16.7kg ; Cindy: 18.3kg - (C) Betty: 200kg ; Cindy: 220kg - (D) None of the above
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" A negatively charged rod is brought near two neutral conducting spheres P & Q mounted on insulated stands as shown. P & Q are separated and afterwads the rod is removed. what will be the final charges on P & Q respectively? - (A) P: Negative ; Q: Negative + (B) P: Positive ; Q: Negative - (C) P: Neutral  ; Q: Neutral - (D) P: Positive ; Q: Neutral
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" Two current carrying conductors are installed in parallel as shown. Conductor X experiences a force F. The magnitude and direction of the force which will be experienced by  conductor Y is? + (A) Magnitude: F  ; Direction: Repulsive - (B) Magnitude: 3F ; Direction: Repulsive - (C) Magnitude: 3F ; Direction: Attractive - (D) Magnitude: F  ; Direction: Attractive
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{ {| cellspacing="0" cellpadding="0" style="margin:0em 0em 1em 0em; width:100%" Two trolleys, A(3Kg) and B(6Kg) are attached to each-other by an elastic band as shown. They are pulled apart and held at rest on a horizontal friction-less surface. After they are released, they move towards each other and collide. After the collision the trolleys will ... - (A) Move to the left and stop. + (B) Move to the left at constant speed. - (C) Stop. - (D) Move to the right at constant speed.
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