91. The torque transmitted by a cylindrical shaft is to be measured by using two strain gauges. The angles for mounting the strain gauges relative to the axis of the shaft for maximum sensitivity are
92. Which of the following methods can be used for measuring power without using wattmeter.
1. One voltmeter, one ammeter
2. Two voltmeters, two ammeters
3. Three voltmeters
4. Three ammeters
1. One voltmeter, one ammeter
2. Two voltmeters, two ammeters
3. Three voltmeters
4. Three ammeters
93. A vibration galvanometer is tunded:
94. The Q-factor measures
95. Consider the ammeter-voltmeter method of determining the value of the resistance R using the circuit shown in the figure. The maximum possible errors of the voltmeter and ammeter are known to be 1% and 2% of their readings, respectively. Neglecting the effects of meter resistances, the maximum possible percentage error in the value of R determined from the measurements, is:
96. Which of the following is used to measure the leakage resistance of a capacitor?
97. A piezoelectric crystal having a thickness of 2 mm and a voltage sensitivity of 0.02 V-m/N is subjected to a pressure of 20 × 103 Pa. What is the output voltage?
98. In orifice meter, vena contracta is a position where . . . . . . . . is maximum and . . . . . . . . is minimum.
99. On an induction type energy meter, is written "600 rev/kWh". If it is to be used an approximate wattmeter which is read off in rpm, a 600 watt load would read as
100. A d.c. circuit can be represented by a voltage source of 10 V in series with an output resistance of 1 kΩ. An ammeter of 50 Ω resistance is connected to the source terminals for measurement of current. The accuracy of measurement is nearly
Read More Section(Measurement and Instrumentation)
Each Section contains maximum 100 MCQs question on Measurement and Instrumentation. To get more questions visit other sections.