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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?
One channel records FHR on a calibrated chart in beats per minute while the other channel is used for recording uterine contractions calibrated _______
A cloth dealer sells cloth at Rs. 80 per meter using a meter tape of 90 cm in length. Raju buys cloth for 3 dresses, each dress will need 3-meter cloth. While making the dress tailor finds out the fault and asks Raju to bring more cloth considering cheating by shopkeeper. Find how much overall money will Raju need for 3 dresses including Rs. 200 stitching charges of tailor per dress?
An average responding rectifier type electronic ac voltmeter has its scale calibrated in terms of the rms value of a sine wave. If a square wave voltage of peak amplitude of 100 V is measured using this voltmeter, what will be the reading indicated by the meter?
An electrodynamometer instrument can be used as 1. Wattmeter and VAR meter 2. Power factor meter and Frequency meter 3. Transfer instrument Which of the above statements are correct?