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Select the option that is true regarding the following two statements labeled Assertion (A) and Reason (R). Assertion (A): Whenever we measure an electrical signal, there are chances of over current which leads to overheating of the meter. In such cases, the meter can be protected by using a semiconductor diode of suitable rating. Reason (R): As soon as the diode is short-circuited, the meter current is diverted through the diode. As a result, the meter is being protected from excess heating.
A middle school mathematics teacher distributes a piece of rope, 1 meter long, to her students. She asks them to make a list of things in their surroundings that are 1 meter long, slightly less or more than 1 meter, double or half of one meter. Which of the following statement(s) is/are true for the given situation? (a) It can be used as an activity to introduce standard unit of length measurement in a class. (b) It can be used to encourage children to estimate length of objects in daily life, (c) It is a good activity to establish the formula for conversion of metre to centimetre or vice-versa. (d) This type of activity should be given only as home task so that class time is utilised for solving the questions. Choose the correct option.
A rectangular swimming pool is 15 meter long and 30 meter wide. A deck, with uniform width, surrounds the pool. If the total area of the pool and deck is 1050 square meter what is the width of the deck in meter?
How many floor tiles of measurement  5 meter × 1 meter will be required for lying tiles in 30 meter long and 25 meter wide rectangular field?
In a playground P, Q, R, S, and T are standing, facing the north as described below: - I. Q is 50 meter to the right of S. II. P is 60 meter to the south of Q. III. R is 40 meter to the west of S. IV. T is 80 meter to the north of P. If a person from R walks straight, meets S followed by Q, P and then T. Then how much distance did he cover?
Price of LED strip is constant at Rs. 150 up to the length of x meter and beyond that it is charged Rs. 22 per meter. If a person buys 17 meter LED strip, he has to pay total amount of Rs. 392. What will be the price of 23 meter LED strip?
Which of the following is an inferential type of flow meter
Instructions: Below question contains a statement followed by quantity 1 and quantity 2. You have to study the information along with the question and compare the value derived from quantity 1 and quantity 2, then answer. Quantity 1: Radius of a circle is twice the side of square, whose diagonal is 21√2 meter, find (1/22) of area of circle and (1/7) of area of square is what percent more than the area of triangle which base and height is 30 meter and 20 meter respectively? Quantity 2: A tank of cube shape with open top side, than find open side area of tank is what percent of total area of remaining sides of tank?
The figure shows the circuit of a rectifier type voltmeter. The diode D2 1. Does not allow any current to flow through the meter durign negative half cycle. 2. Does not allow reverse leakage current to flow through the meter during negative half cycle. 3. Short circuits the meter during negative half cycle. Which of these statements are correct?
The length of a room is 6 meter, width is 5 meter and height is 4 meter. If the walls of the room are covered by a paper which is 50 cm broad, then what will be the length of the paper?