Question
What is the main principle behind the working of an
electric motor?Solution
An electric motor works on the principle of electromagnetic induction. When a current carrying conductor is placed in a magnetic field, a force acts on it, resulting in motion. This is explained by Fleming's left hand rule. The magnetic field and electric current interact to produce mechanical energy.
If ‘P’ means ‘+’, V means ‘x’, T means ‘-‘ and ‘Q’ means “÷’ , then find ...
Which among the given operators should replace the “%” (in the same order) in the given expression below:
9 % 14 % 9 % 90 % 42 % 15
Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
24 * 2 * 16 * 2 * 13 = 53
A recent survey of married couples in Indian metro cities showed that 20% of the couples have only one child, 45% of the remaining couples have two chil...
If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then ____ is the value of the expression.
36 A 6 B 6 D 6 ...
Which two signs should be interchanged to make the given equation correct?
225 + 5 × 3 ÷ 5 – 7 = 133What is the code for ‘it’?
If ‘+’ means ‘-’, ‘×’ means ‘+’, ‘-’ means ‘÷’ and ‘÷’ means ‘×’, then, what is the value of the following expressio...
If '+' means 'division', '-' means 'multiplication', '÷' means 'addition' and ' X ' means 'subtraction', then what is the value of the following expres...
Select the correct combination of mathematical signs that can sequentially replace '*' sign and balance the equation given below.
88 * 16 * 4 * 1...
