If a shunt motor is started with its field winding open then___________?

Related Mcqs:

1. If a shunt motor is started with its field winding open then?

   A. It will rotate at the same speed as that with its field winding closed
   B. It will rotate at less speed as that with its field winding closed
   C. It will rotate at dangerously high speed
   D. None of these

2. The sum of all phase current in a star connected primary winding with no neutral connection is equal to___________?

   A. Phase current
   B. Three times the phase current
   C. Three times the line current
   D. Zero at all times

3. With gate open, the maximum anode current at which SCR is turned off from ON condition is called____________?

   A. breakdown voltage
   B. peak reverse voltage
   C. holding current
   D. latching current

4. The ability of an electronic system to function properly in its intended electromagnetic environment and should not be a source of pollution to that electromagnetic environment is known as____________?

   A. Susceptibility
   B. Emission
   C. Interference
   D. Electromagnetic compatibility

5. A MOSFET, for its conduction uses_____________?

   A. Only minority carriers
   B. Only majority carriers
   C. Both minority and majority carriers
   D. None of these

6. The latching current of GTO should be of order

   A. 100 mA
   B. 500 mA
   C. 1 A
   D. 2 A

7. Why resistor is used in Snubber circuit_________________ ?

   A. To minimize the loss
   B. To minimize the charging current
   C. To minimize the discharging current
   D. All of these

8. Maximum di / dt in a SCR is________?

   A. Directly proportional to Vm of supply voltage
   B. Inversely proportional to Vm of supply voltage
   C. Inversely proportional to L in the circuit
   D. Both A and C

9. DIAC are specifically designed to trigger______________?

   A. TRIAC
   B. SCR
   C. GTO
   D. Only (a) and (b)

10. The effects of EMI can be reduced by_____________?

    A. Suppressing emissions
    B. Reducing the efficiency of the coupling path
    C. Reducing the susceptibility of the receptor
    D. All of these