A) 400 Nm B) 300 Nm C) 250 Nm D) 200 Nm. Ans : (C)
A) variable loss = constant loss B) variable loss should be half of the constant loss C) constant loss should be half of the variable loss D) none of these. Ans : (A)
A) shape of magnet core B) length of airgap C) flux density employed in core and teeth D) all of the above. Ans : (D)
A) 0.5 to 0.6 B) 1.0 C) 1.1 to 1.3 D) 2 to 2.2. Ans : (C)
A) Is many times its rated full load current B) Will produce excessive voltage drop in line C) May damage the armature and commutator D) All of the above. Ans : (D)
A) increase B) decrease C) become excessively high D) remain unaltered. Ans : (A)
A) supply voltage B) armature voltage C) armature current D) field excitation. Ans : (B)
A) field divider B) voltage divider C) potential divider D) none of these. Ans : (A)
A) not start automatically B) start automatically without trouble C) develop very low starting torque D) get damaged due to flow of excessive current in the armature. Ans : (D)
A) increase B) decrease C) remain unaltered D) become zero. Ans : (B)