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Consider the following statements with regard to Lissajous pattern on a CRO: 1. It is a stationary pattern on the CRO 2. It is used for precise measurement of frequency of a voltage signal 3. The ratio between frequencies of vertical and longitudinal voltage signals should be an integer to have a steady Lissajous pattern Which of the above statements is/are correct?
Consider the following statements for dynamic characteristics of a measurement system: 1. Fidelity is defined as the degree to which a measurement system indicates changes in the measured quantity without any dynamic error. 2. Dynamic error is the difference between the true value of the quantity changing with time and the value indicated by the measurement system if no static error is assumed. 3. Measuring lag is the retardation in the response of a measurement system to changes in the measured quantity. Which of the above statements are correct?
Lissajous pattern shown in a double-beam cathode-ray oscilloscope screen for two sinusoidal voltages of equal magnitude and of the same frequency but of phase shift of 30° electrical is
The size of the philips LCD television screen is given as the length of the screen's diagonal , Assume that the screens of the television were flat. Find out how many square inches greater would be the screen of square inches greater would be the screen of a square 21 -inch television set than that of a square 19-inch television set.
The size of the Philips LCD television screen is given as the length of the screen's diagonal, Assume that the screen of the television were flat, Find out how many square inches greater would be the screen of a square 21-inch television st than that of a square 19-inch television set
Consider a measuring system consisting of a sensor, an amplifier and an oscilloscope. The sensitivity of each equipment is as follows : Sensor sensitivity : 0.4 mV/°C, Amplifier gain : 5.0 V/mV, and Oscilloscope sensitivity : 10 mV/V. What is the sensitivity of complete measurement system ?
A parallel beam of infrared radiation of wavelength of 1.01 × 10-6 m is incident normally on a screen with two slits 5 × 10-6 m apart and the resulting interference pattern is observed on a distant screen. What is the largest number of maxima that can be observed on the screen?
An oscilloscope is powered from 230 V mains having a nominal frequency of nearly 50 Hz. The triggering mode of the oscilloscope is set to LINE. A square wave from a function generator is fed to the Y input and a stable display (properly triggered) is obtained when the frequency of the function generator is 297 Hz. The actual frequency of the power supply is
Which among the following are the anthropometric procedures for measurement?
1. Length measurement
2. Head circumference measurement
3. Weight measurement
4. Waist measurement`
Horizontal input to a scope is Em sin (ωt) V, vertical input to that scope is Em sin (ωt + 30°) V. What is the Lissajous pattern in that CRO?