Materials And Components - Study Mode
[#111] Superconducting materials are used in which of the following application? 1. Magnetic Resonance Imaging (MRI). 2. Magnetic Resonance Spectroscopy (MRS). 3. High-speed switching and signal transmission for computers. 4. High-speed magnetically levitated trains. Select the correct answer using the options given below:
Correct Answer
(D) 1, 2, 3 and 4
[#112] Consider the following statements for superconductivity: 1. Superconducting magnets capable of generating high fields with low power consumption are currently being employed in scientific test and research equipment. 2. One of the potential applications of superconducting materials is electrical power transmission through superconducting materials- power losses would be extremely low, and the equipment would operate at low voltage levels. 3. Type II superconductors are preferred over type I for most practical applications by virtue of their higher critical temperatures and critical magnetic fields. Which of the above statements is/are correct?
Correct Answer
(D) 1, 2 and 3
[#113] Hall effect may be used for which of the following?
Correct Answer
(D) All of the above
[#114] Consider the following statements regarding ceramic resonator circuits: 1. The specify larger load capacitance values than crystal circuits 2. They draw still more current than crystal circuit using the same amplifier Which of the above statements is/are correct?
Correct Answer
(C) Both 1 and 2
[#115] If a material contains 10 20 molecules/m 3 , each molecule having a moment of 8.854 × 10 -27 C-m parallel to an electric field of 10 5 /m, then its dielectric constant is
Correct Answer
(B) 2