Question
Which of the following principle is used to produce
low-temperatures'?Solution
Magnetic refrigeration is a cooling technology based on the magneto- caloiic effect. This technique can be used to attain extremely low temperatures, as well as the ranges used in common refrigerators, depending on the design of the system. The magneto- caloric effect (MCE, from magnet and calorie) is a magneto-thermodynamic phenomenon in which a change in temperature of a suitable material is caused by exposing the material to a changing magnetic field.
- What will come in place of (?) in the given expression.
48 ÷ 4 × 5 + 36 – 18 = ? [1.45 X 1.45 X 1.45 + 0.55 X 0.55 X 0.55 + 4.785] = ?
641.5 + 72 × 8 = ? × 4
What will come in the place of question mark (?) in the given expression?
(240% of 175 ÷ √16) X 6 + 80% of 400 = ?3 + 179 + 42
35% of 240 – 6 2 = ? 2 – √256
((67)32 × (67)-18 / ? = (67)⁸
(115 × 17 × 3)/(23 × 51) + ?3 = √169
15% of 1800 + 22 = ?
(?) + (35)2 = (140)2 – (80)2 + 20% of 5480
Solve: 3/4÷2/3
Relevant for Exams:
