Q.1
##### Which of the following is not the operating characteristics of Dc generator?
• c) External characteristics
• d) Internal characteristics
Q.2
##### Characteristics drawn at Ia = 0 is also called as ____________
• a) Magnetization characteristics
• b) Non-magnetization characteristics
• c) Anti-magnetization characteristics
• d) Cannot be determined
Q.3
##### Open circuit characteristics (OCC) is generally drawn across __________
• a) Ea vs If, Ia=constant (not equal to rated)
• b) Ea vs If, Ia=0
• c) Ea vs If, Ia=constant
• d) Ea vs If, Ia=constant (rated)
Q.4
##### Characteristics of a DC generator drawn across Vt vs If at rated armature current and constant speed, is called as ____________
• c) External characteristics
• d) Armature characteristics
Q.5
• a) True
• b) False
Q.6
##### While conducting OCC, in order to avoid hysteresis loop, in which direction If should be increased?
• a) -ve direction
• b) +ve direction
• c) In any direction
• d) In both direction there exists hysteresis loop
Q.7
##### Air gap line is drawn at iron _________
• a) Saturated
• b) Unsaturated
• c) Moderately saturated
• d) Variable saturation
Q.8
##### If suppose OCC is conducted at speed nwhere nnrated, OCC will lie ____________
• a) Above OCC at nrated
• b) On OCC at nrated
• c) Below OCC at nrated
• d) Can’t comment by only speed information
Q.9
##### Ea can be determined using __________
• c) Cannot be determined
• d) Above OCC
Q.10
##### If load characteristics are drawn on OCC itself, we get curve ________
• a) Above OCC
• b) On OCC
• c) Below OCC
• d) Intersecting OCC
Q.11
##### Load characteristics drawn at Ra =0 and Ra not equal towill lie _____
• a) Above
• b) On
• c) Below
• d) Intersecting
Q.12
##### OCC is drawn at two different speeds both less than rated speed. OCC drawn at speed N1 lies below OCC drawn at speed NWhich of the following relation is correct?
• a) N2 = N1
• b) N2 < N1
• c) N2 >> N1
• d) Can’t comment
Q.13
##### Why No-load or load characteristics are also called as magnetization characteristics?
• a) Ea α If
• b) Ea α φ
• c) If α φ
• d) Cannot be determined