Electric Circuits The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be 4R Ω 8R Ω 2R Ω R Ω 4R Ω 8R Ω 2R Ω R Ω ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits When a lossy capacitor with a dielectric of permittivity ε and conductivity σ operates at a frequency ω the loss tangent for the capacitor is given by ω σ/ε. σ ω ε. σ/ω ε. ω ε/σ. ω σ/ε. σ ω ε. σ/ω ε. ω ε/σ. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is time period T? Time taken by an alternating quantity to reach the peak value. Time taken by an alternating quantity to complete the (-)ve half. Time taken by an alternating quantity to complete one full cycle. Time taken by an alternating quantity to complete the (+)ve half. Time taken by an alternating quantity to reach the peak value. Time taken by an alternating quantity to complete the (-)ve half. Time taken by an alternating quantity to complete one full cycle. Time taken by an alternating quantity to complete the (+)ve half. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Two battery having unequal emf both a and d cannot be connected in parallel. cannot be connected in series. can be connected in series only. both a and d cannot be connected in parallel. cannot be connected in series. can be connected in series only. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The phase angle of current in respect of supply voltage will be 28.8o. 40.4o. 20.2o. 32.1o. 28.8o. 40.4o. 20.2o. 32.1o. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Phase voltages of a star connected alternator are ER = 240∠0o V, EY = 240∠-120o V and EB = 240∠ + 120o V. What is the phase sequence of the system? RBY. YBR. BYR. RYB. RBY. YBR. BYR. RYB. ANSWER DOWNLOAD EXAMIANS APP
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