Electrical And Electronic Measurement MCQs

A voltmeter has a uniform scale with 100 divisions. The full-scale reading is 10 V and could be read upto 1/10 of a scale division with some degree of certainity.It's resolution is

One of the two wattmeters has read zero in the two-wattmeter method of power measurement. This indicated that the load phase angle is

A 0-300V voltmeter has a guaranteed accuracy of 2 per cent of full-scale reading. If the voltage measured by this instrument is 180 V, then the limiting error will be

Which one of the following statements regarding Hay bridge and Maxwell bridge is correct?

Which one of the following is most suitable for measuring very small capacitances?

Which of the following are the requirements of a CRO (cathode ray oscilloscope) or display of high frequency sinal (magahertz)?I. Input capacitance should be low. 2. Cathode ray tube Shold be provided with post-acceleration.3. Shrot persistance phosphors should be used in the screen. 4. Electromagnetic focussing and deflection system Should be used. Select the correct answer using the codes given below : Codes :

A 1000/5 A bar primary current transformer has the ratio and phase error at its rated current with a certain secondary burden of ? 0.4 per cent and +30 minutes respectively. If the number of secondary turns is reduced by unity, the new ratio error and phase error at the rated current and for the same burden will be respectively.

The Controlling torque and the electromagnetic damping of the fluxmeter are

If an induction type energy meter runs fast, it can be slowed down by adjusting the