Which of the following is the major consideration to evolve a good design ?

Related Mcqs:

1. Which of the following is the major consideration to evolve a good design?

   A. Cost
   B. Durability
   C. Compliance with performance criteria as laid down in specifications
   D. All of the above

   Submitted by: Abid

2. Which of the following is the basic consideration in the design of insulation ?

   A. Electrical considerations
   B. Mechanical considerations
   C. Thermal considerations
   D. All of the above

3. The length cf air gap to be provided in __________ is primarily determined by power factor consideration?

   A. d.c. series motor .
   B. d.c. shunt motor
   C. induction motor
   D. synchronous motor

4. The design of electromagnets is based upon which of the following fundamental equations ?

   A. Force equation
   B. Magnetic circuit equation
   C. Heating equation
   D. Voltage equation
   E. All of the above

5. The design of mechanical parts is particularly important in case of __________ speed machines?

   A. low
   B. medium
   C. high
   D. any of the above

6. Which of the following materials is used in the manufacture of resistance grids to be used in the starters of large motors ?

   A. Copper
   B. Aluminium
   C. Steel
   D. Cast-iron

7. The slot leakage can be calculated by making which of the following assumptions ?

   A. The current in the slot conductors is uniformly distributed over their cross-section
   B. The leakage path is straight across the slot and around the iron at the bottom
   C. The permanence of air paths is only considered. The reluctance of iron paths is assumed as zero
   D. All of the above

8. Which of the following is the commonly used type of electromagnets ?

   A. Flat-faced armature type
   B. Horse shoe type
   C. Flat-faced plunger type
   D. All of the above

9. The value of exciting or magnetizing current depends upon which of the following factors ?

   A. Total m.m.f. required
   B. The number of turns in the exciting winding
   C. The way in which the winding is distributed
   D. All of the above

10. Which of the following problem arises in D.C. motors which are fed from thyristor bridge circuits ?

    A. Increased I R losses
    B. Increased core losses
    C. Poor commutation
    D. Change in motor parameters
    E. All of the above