Q. A unijunction transistor has ?
✅ Correct Answer: (C)
two bases and one emitter
Measurement and Instrumentation MCQs | Page - 1
Dear candidates you will find MCQ questions of Measurement and Instrumentation here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. A three-phase full-wave half-controlled bridge uses ?
✅ Correct Answer: (C)
2 SCRs
Q. An SCS has ?
✅ Correct Answer: (D)
one anode, one cathode and two gates
Q. The operation of a thermocouple is based on ?
✅ Correct Answer: (A)
Seebeck effect
Q. Holding current in PNPN diode is the ?
✅ Correct Answer: (B)
minimum current to keep the, SCR ON
Q. Most SCRs can be turned off by voltage reversal during negative half cycle of the A.C. supply for ?
✅ Correct Answer: (B)
frequencies upto 200 Hz
Q. A voltmeter must have very high internal resistance so that ?
✅ Correct Answer: (C)
Draws small amount of current
Q. Errors which may be variable both in magnitude and nature (positive or negative) are classified as ............. error ?
✅ Correct Answer: (B)
Random
Q. The use of ........ instruments is merely confined within laboratories instruments. as standardizing ?
✅ Correct Answer: (A)
Absolute
Q. To reduce the loading effect, an instrument must possess ?
✅ Correct Answer: (C)
High input impedance
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