A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Electrical And Electronic Measurement }

246. An LVDT is used to measure displacemnt. The output of the LVDT is connected to a voltmeter of range 0 to 5 V through an amplifier having a gain of 250. For a displacement of 0.5 mm, the output of the LVDT is ? mV. The sensitivity of the instrument would be
A. 0.1 V/mm
B. 0.5 V/mm
C. 1 V/mm
D. 5 V/mm
Discuss in Forum

247. It is required to measure temperature in the range of 1300?C to 1500?C. The most suitable thermocouple to be used as a transducer would be
A. Chromel-constantan
B. Iron ? constantan
C. Chromel- alumel
D. Platinum - rhodium
Discuss in Forum

248. Strain sensing trandsucers are mode of various materials in various sizes and shapes. The sensitivity of a strain gauge is expressed in terms of a gauge factor. For a certain application, a guage factor of 100 is desired. The proper strain gauge to be used in this case would be
A. Constantan strain gauge
B. Nichroma-V strain guage
C. Semiconductor strain guage
D. Platinum -tungsten alloy strain guage.
Discuss in Forum

249. An angular position is to be measured using transducer. Which of the following types of tranducers can be used for this purpose? 1. Circular potentiometer. 2. LVDT 3. E-pick off 4. Synchro. Select the correct given below Codes :
A. 1, 2, 3 and 4
B. 1 and 3
C. 1, 2 and 4
D. 1 and 4
Discuss in Forum

250. In a linear, an input of 5 sin cut produces an output of 10 cos wt. The output corresponding to input 10 cos tot will be used to
A. + 5 sin cot
B. ? 5 sin cot
C. + 20 sin wt
D. ? 20 sin un
Discuss in Forum

251. Two resistance 100 and 150 are connected in series. If the errors are specified as standard deviations, the resultant error will be
B. ? 10.6 S2
C. ? 15.8 SI
D. ? 20 ci
Discuss in Forum

252. A sinusoidal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 V/ cm, the rms value of the voltage will be
A. 10.6V
B. 11.1V
C. 12.6V
D. 15V.
Discuss in Forum

Page 36 of 44

« 34 35  36  3738 »