A turbine is tripped when ?

Related Mcqs:

1. If 1 A current flows in a circuit, the number of electrons flowing through this circuit is

   A. 0.625 × 10¹⁹
   B. 1.6 × 10¹⁹
   C. 1.6 × 10-¹⁹
   D. 0.625 × 10-¹⁹

2. The size of a power transistor is made considerably large to________________?

   A. Provide easy handling
   B. Dissipate heat
   C. Facilitate connections
   D. None of the above

3. The output transformer used in a power amplifier is a _____________ transformer?

   A. 1:1 ratio
   B. Step-up
   C. Step-down
   D. None of the above

4. The purpose of d.c. conditions in a transistor is to___________________?

   A. Reverse bias the emitter
   B. Forward bias the collector
   C. Set up operating point
   D. None of the above

5. RC coupling is generally confined to low power applications because of____________?

   A. Large value of coupling capacitor
   B. Low efficiency
   C. Large number of components
   D. None of the above

6. A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is____________?

   A. 1,403 Ω
   B. 4.7 kΩ
   C. 2 kΩ
   D. 3,403 Ω

7. A sinusoidal voltage with a peak-to-peak value of 18 V is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is____________?

   A. 18 V peak-to-peak
   B. zero
   C. 9 V peak-to-peak
   D. 12.74 V peak-to-peak

8. Which one of the following functions like a motor ?

   A. galvanometer
   B. ammeter
   C. voltmeter
   D. all of above

9. When we rub a glass rod with a silk cloth then________________?

   A. glass rod acquires negative charge while silk acquires positive charge
   B. glass rod acquires positive charge while silk acquires negative charges
   C. both glass rod and silk acquire negative charge
   D. both glass rod and silk acquire positive charge

10. Farad is the unit of___________?

    A. inductance
    B. voltage
    C. capacitance
    D. None of these

    Submitted by: Asad malik