Q. Which of the following is not an operating technique for sensitivity enhancement?

View solution

Q. Which of the following techniques do not enhance sensitivity by a factor of 10 at normal operating conditions?

View solution

Q. The most common spherical cells have which of the following dimensions?

View solution

Q. Better sensitivity with good resolution can be achieved by concentrating the sample inside which of the following?

View solution

Q. Frequency spectrum of noise occupies a band that is _________ the signal spectrum. Choose the most appropriate option.

View solution

Q. Suppression of frequencies which contain no signal does which of the following?

View solution

Q. The amplitude of the NMR signal caused by the absorption of RF energy at the radio frequency does not depend upon the power of the RF energy applied.

View solution

Q. Which of the following is not involved in signal averaging?

View solution

Q. In order to have a long measuring time for increasing sensitivity, it is better to have several fast scans than a single slow scan.

View solution

Q. In Spin Decoupler, the output of the DC amplifier is applied to which of the following to control the power supplied to the oven heaters?

View solution

Q. In Spin Decoupler, the difference frequency circuit provides a means of mixing two signals and a filter to recover which of the following?

View solution

Q. Given below is the diagram of Cw NMR spectrometer. Identify the unmarked component.

View solution