ECE · all questions

Measurement And Instrumentation
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

324

Questions

15/17

Page

Pick an option on a question to see the right answer and solution.

Q281

A digital linear displacement transducer normally uses

Select an option to see the answer and solution.

Q282

The measurement of the speed of a rotating shaft by means of an electric tachometer is a:

Select an option to see the answer and solution.

Q283

The null balance potentiometric measurement of voltage technique is not capable of measuring

Select an option to see the answer and solution.

Q284

What is the major cause of creeping in an energy-meter?

Select an option to see the answer and solution.

Q285

Q factor is measured using

Select an option to see the answer and solution.

Q286

Consider two metallic wires W₁ and W₂. They are made up of same material and each has circular cross-section. The diameter of W₂ is twice that of W₁ and the length of W₂ is four times that of W₁. Which one of the following statement is TRUE?

Select an option to see the answer and solution.

Q287

The following is not essential for the working of an indicating instrument

Select an option to see the answer and solution.

Q288

The advantage of Hay's bridge over Maxwell's inductance-capacitance bridge is

Select an option to see the answer and solution.

Q289

A circle is found on the screen of CRO when 2 time varying signals of same frequency and same magnitude are applied to X and Y plates of the CRO. What is the relative phase difference?

Select an option to see the answer and solution.

Q290

Which one of the following effect is used in measuring power?

Select an option to see the answer and solution.

Q291

Electrical voltage-based telemetering schemes used for short distances must necessarily have

Select an option to see the answer and solution.

Q292

With . . . . . . . . testing is possible to see even smallest distortions clearly on CRO.

Select an option to see the answer and solution.

Q293

A voltmeter having symmetrical square wave shape is applied to an average reading voltmeter with scale calibrated in terms of RMS value of a sinusoidal wave has an error of:

Select an option to see the answer and solution.

Q294

In a Q meter, an inductor turns to 2 MHz with 450 pF and to 4 MHz with 90 pF. The value of self-distributed capacitance is:

Select an option to see the answer and solution.

Q295

In an LVDT, there are two secondary coils which are connected for a signal output. Which one of the following is correct?

Select an option to see the answer and solution.

Q296

For measuring DC value of current which meter is preferable . . . . . . . .

Select an option to see the answer and solution.

Q297

If a dynamometer type wattmeter is connected in an ac circuit the power indicated by the wattmeter will be

Select an option to see the answer and solution.

Q298

If power is measured using two-wattmeter method with unity power factor, then:

Select an option to see the answer and solution.

Q299

A resistance strain gauge has a resistance of

Select an option to see the answer and solution.

Q300

An accelerometer has a seismic mass of 0.05 kg and a spring constant of 3 × 10³ N/m. The maximum permissible displacement of the mass is ±1 mm. The maximum measurable acceleration is

Select an option to see the answer and solution.

Prev 13 14 15 16 17 Next