logo

CuriousTab

CuriousTab

Discussion


Home Electronics and Communication Engineering Measurements and Instrumentation Comments

  • Question
  • In a resistance strain gauge, G = 2, stress = 1050 kg/cm2, R = 1000 ?. The value of ?R will be


  • Options
  • A. 2 ?
  • B. 3 ?
  • C. 4 ?
  • D. 1 ?

  • Correct Answer
  • 1 ? 

    Explanation
    In a resistance strain gauge, G = 2, stress = 1050 kg/cm2, R = 1000 ?. The value of ?R will be 2 ? 3

    In a resistance strain gauge, G = 2, stress = 1050 kg/cm2, R = 1000 ?. The value of ?R will be 2 ? 3.


    Measurements and Instrumentation problems


    Search Results


    • 1. Which of the following is true about an impulse voltage?

    • Options
    • A. It is a unidirectional voltage
    • B. Chopped impulse flashover does not occur
    • C. Time taken to rise is equal to time taken to fall
    • D. RMS value is always less than 50% of average value
    • Discuss
    • 2. Loss of charge method is suitable for medium resistances.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. A moving iron instrument gives correct reading when used at

    • Options
    • A. low frequencies
    • B. high frequencies
    • C. only one frequency
    • D. all frequencies upto a certain value
    • Discuss
    • 4. A full wave rectifier type meter is used to measure the wave shape shown in figure. The voltmeter is calibrated to read rms value of sine wave. The reading of voltmeter will be

    • Options
    • A.
    • B.
    • C. 100 V
    • D. 111 V
    • Discuss
    • 5. Consider the following statements: In a differential amplifier using JFET, the differential output offset is due to

      1. mismatch between FET parameters
      2. difference in values of resistances used in circuit
      3. variation in supply voltage.
      Of the statements, the correct statements are

    • Options
    • A. 1 and 2
    • B. 1, 2, 3
    • C. 2, 3
    • D. 1, 3
    • Discuss
    • 6. In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is

    • Options
    • A. 1
    • B. 0.5
    • C. 0
    • D. 0.8
    • Discuss
    • 7. Which power amplifier can deliver maximum load power?

    • Options
    • A. Class A
    • B. Class AB
    • C. Class B
    • D. Class C
    • Discuss
    • 8. A half wave diode circuit using ideal diode has an input voltage 20 sin ?t volts. Then average and rms values of output voltage are

    • Options
    • A. and 10 V
    • B. and 10 V
    • C. and 5 V
    • D. and 5 V
    • Discuss
    • 9. In figure v1 = 8 V and v2 = 8 V. Which diode will conduct?

    • Options
    • A. D1 only
    • B. D2 only
    • C. Both D1 and D2
    • D. Neither D1 nor D2
    • Discuss
    • 10. Negative feedback reduces noise originating at the amplifier input.

    • Options
    • A. True
    • B. False
    • Discuss


    Comments

    There are no comments.

Enter a new Comment