When a Wheatstone bridge is in a balanced condition, the center voltmeter in the bridge will read_____________?

Related Mcqs:

1. A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is____________?

   A. 680 Ω
   B. 1,029 Ω
   C. 200 Ω
   D. 880 Ω

2. A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?

   A. 24 Ω
   B. 2.4 Ω
   C. 300 Ω
   D. 3,000 Ω

3. A Wheatstone bridge can be used to determine an unknown_____________?

   A. current
   B. voltage
   C. resistance
   D. power

4. On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?

   A. 1 V
   B. 50 V
   C. 500 V
   D. 1,000 V

5. The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is_____________?

   A. 20,000 Ω
   B. 100,000 Ω
   C. 200,000 Ω
   D. 1,000,000 Ω

6. Which quantity should be measured by the voltmeter ?

   A. Current
   B. Voltage
   C. Power
   D. Speed

7. A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?

   A. 10.9 V
   B. 1.09 V
   C. 1.1 V
   D. 12 V

8. A parallel resonant band-pass filter consists of a 6.8 Ω resistor in series with a parallel network made up of an 8 µH coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 Ω. What is the center frequency of the filter?

   A. 5.14 MHz
   B. 514 kHz
   C. 5.03 MHz
   D. 503 kHz

9. A parallel resonant band-pass filter consists of a 90 Ω resistor in series with a parallel network made up of a 60 mH coil and a 0.02 µF capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 Ω. What is the center frequency of the filter?

   A. 459 Hz
   B. 4,591 Hz
   C. 999 Hz
   D. 2,176 Hz

10. With 21 V applied, if R1 = 5 ohms, R2 = 35 ohms, and R3 = 14 ohms, what is the current of R2 if R1 is series connected with parallel circuit R2 and R3?

    A. 200 mA
    B. 400 mA
    C. 600 mA
    D. 800 mA