DC Generators For the same rating, a dc machine has_______ an ac machines. More weight than Less weight than None of the listed here The same weight as More weight than Less weight than None of the listed here The same weight as ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature winding of a dc machine is place on the rotor to ______ Facilitate commutation Save iron Reduce losses Reduce armature reaction Facilitate commutation Save iron Reduce losses Reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Generators If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to increase the speed of primemover check armature insulation resistance increase the field resistance reverse the field connections increase the speed of primemover check armature insulation resistance increase the field resistance reverse the field connections ANSWER DOWNLOAD EXAMIANS APP
DC Generators The main drawback of a dc shunt generator is that Shunt field circuit has high resistance Generated voltage is small Terminal voltage drops considerably It is expensive Shunt field circuit has high resistance Generated voltage is small Terminal voltage drops considerably It is expensive ANSWER DOWNLOAD EXAMIANS APP
DC Generators The voltage drop for which of the following types of brush can be expected to be least? Metal graphite brushes Carbon brushes None of these Graphite brushes Metal graphite brushes Carbon brushes None of these Graphite brushes ANSWER DOWNLOAD EXAMIANS APP
DC Generators The yoke of a dc machine carries ______ pole flux. One-half of None of the listed here Two times the Three times One-half of None of the listed here Two times the Three times ANSWER DOWNLOAD EXAMIANS APP
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