|
72. Maxwell-Wein bridge is used for measuring
A) capacitance B) dielectric loss
C) inductance D) phase angle

73. The decibel is a measure of
A) voltage B) current C) power D) power level

74. Non-sinusoidal waveforms are made up of
A) different sinusoidal waveforms B) fundamental and even harmonics
C) fundamental and odd harmonics D) even and odd harmonics only

75. There are no transients in pure resistive circuits because they
resistance B) have no stored energy
m's law D) are linear circuits

76. Anunbalan
consists of
A) a positive-sequence component B) anegative-sequence component
C) azero-sequence component D) all of the above

system of three-phase voltages having RYB sequence actually

77. Transformer oil serves the functions of
A) insulation and cooling B) only insulation
C) only lubrication D) only cooling

78. In scott connections the teuser transformer has tapping on

A) 58% of primary B) 58% of secondary
C) 86% of primary D) 86% of secondary
79. The line voltage of a delta-connected three-phase circuit is 415 V. The phase
voltage is
A) 220V B) 230V C) 240V D) 415V
80. Tokeep the frequency constant on increased loads 076 5೧666 01178 8161781017
should be
A) remains constant B) adjust the field
C) decreast D) increased
A 2