Ammeter connected in an AC circuit measures______________?

Related Mcqs:

1. An ammeter measures the total current flowing through a circuit when it is connected__________________?

   A. in series with the circuit
   B. in parallel with circuit
   C. in series with any of the parallel resistances in the circuit
   D. in parallel with any of the series resistances in the circuit

2. In a multi range ammeter as the range increases _____________________?

   A. shunt value decreases
   B. shunt value increases
   C. shunt value remains the same
   D. none of the above

3. Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f ?

   A. 40 W
   B. 90W
   C. 100W
   D. 120W

4. If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?

   A. Twice
   B. One half
   C. Four times
   D. None

5. An A.C series circuit containing 4Ω resistance and 3Ω inductive reactance. The impedance of the circuit is______________?

   A. 1Ω
   B. 5Ω
   C. 7Ω
   D. 7Ω

6. When a pure inductor of inductance L and a pure capacitor of capacitance C are connected in parallel to a sinusoidal potential difference V the potential difference across both L & C will be_______________?

   A. Same
   B. Different
   C. At L will be more than at C
   D. At L will be less than at C

7. A 10Ω electric heater is connected to a 220V 50Hz mains supply. What is the peak value of the potential difference across the heater element ?

   A. 220V
   B. 220/ 2V
   C. 110V
   D. 220 √2V

8. All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________?

   A. same current
   B. same current and potential difference
   C. different current but same potential difference
   D. different current and potential differences

9. Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?

   A. 40 W bulb
   B. 60 W blub
   C. 100 W blub
   D. all will burn equally brightly

10. n an LCR series circuit, if V is the effective value of the applied voltage VR is the voltage across R VL is the effective voltage across L & Vc is the effective voltage across C then_______________?

    IA. V = VR+VL+VC
    B. V2 = VR2+VL2+VC2
    C. V2 = VR2+(VL-VC)2
    D. V2 = VL2+(VR-VC)2