ECE · all questions

Measurement And Instrumentation
practice.

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324

Questions

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Q221

When the pointer of an indicating instrument comes to rest in the final deflected position

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Q222

The resolution of potentiometer must be:

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Q223

Match List-I with List-II and select the correct answer using the options given below the lists:

List-I (Instruments)	List-II (Measurement in which the instrument is used)
a. Lock-in amplifier	1. Patient monitoring
b. Sampling oscilloscope	2. Overcoming ground loop problem
c. Isolation amplifier	3. Phase difference between two signals
d. Strip-chart recorder	4. Signal recovery form noise
	5. Observing very high frequency signals

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Q224

Hall-effect pickup is used for the measurement of

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Q225

Consider the following statements regarding the use of electrodynamometer type indicating instruments:
It is used for measuring
1. direct current
2. alternating current
3. direct voltage
4. alternating voltage
Of these statements

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Q226

The value of Q in terms of conductance G and susceptance B of the circuit is define as:

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Q227

Hydraulic load cells are available which have a maximum capacity of

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Q228

In which of the following ways can zero drift be reduced in the pH meter?

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Q229

The bandwidth of a digitally recorded signal primarily depends upon

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Q230

In data acquisition . . . . . . . . block is used for frequency measurement.

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Q231

For accurate measurement of voltage the most suitable equipment

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Q232

A coil is tuned to response at 1 MHz with a resonating capacitance of 72 pF. At 500 kHz, the resonance is obtained with a resonating capacitance value of 360 pF. The self-capacitance of the coil is

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Q233

Match List-I with List-II and select the correct answer using the options given below:

List-I (Characteristics)	List-II (ADCs)
a. Parallel comparator	1. Null balancing type
b. Successive approximation	2. Fastest converter
c. Dual-slope	3. Voltage dependent conversion time
d. Counter-ramp	4. Integrating type

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Q234

The internal resistance of the milliammeter must be very low for

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Q235

Which of the following cannot provide as much time interval accuracy as the oscilloscope but can capture and display eight or more signals simultaneously, something that scopes cannot do?

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Q236

The three impedances of an ac bridge shown in given figure are:
Z₁ = 200Ω∠60°, Z₂ = 400Ω∠-90°, Z₃ = 300Ω∠0°
The value of Z₄ for the bridge to be balanced is

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Q237

In a linear variable differential transformer (LVDT).

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Q238

Electrical positional system telemetering uses for transmission of signal in

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Q239

A potentiometer is basically a

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Q240

Match List-I with List-II and select the correct answer using the options given below:

List-I (Bridge)	List-II (Quantity)
a. Wheatstone bridge	1. Capacitance
b. Wien bridge	2. Very low resistance
c. Kelvin double bridge	3. Resistance
d. Schering bridge	4. Frequency

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