Electrical Machine Design - Study Mode
[#101] In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be
Correct Answer
(B) 0.5
[#102] Wattmeter cannot be designed on the principle of
Correct Answer
(C) moving iron instrument
[#103] To measure a resistance with the help of a potentiometer it is
Correct Answer
(B) not necessary to standardise the potentiometer
[#104] A Weston synchronoscope is a
Correct Answer
(C) dynamometer instrument
[#105] The density of hydrogen is _____ times the density of air.
Correct Answer
(A) 0.07