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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?
In case of synchronous motor, which of the following are true? a. Synchronous motor is not self-starting b. If the rotor poles are excited by field current and the stator terminals are connected to AC supply, motor vibrates. c. Variable frequency supply is used to start synchronous motor. d. By using frequency converter, a synchronous motor can be brought from standstill to its desired speed.
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: An induction motor can, therefore, be made without electrical connections to the rotor. B: Three-phase squirrel-cage induction motors are widely used as industrial drives because they are self-starting, reliable and economical. C: An induction motor's rotor can be either wound type or squirrel-cage type. D: An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
Consider the following statements: In the above figure, the curves pertain to the DC motor A. Speed vs Armature current characteristic of a DC shunt motor B. Torque vs Armature current characteristic of a DC shunt motor C. Speed vs Armature current characteristic of a DC series motor D. Torque vs Armature current characteristic of a DC series motor
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?