Related Questions

What is the name of the device used to convert alternating current into direct current ?
A Ammeter
B Galvanometer
C Rectifier
D Transformer
The r.m.s. value of alternating current is given by steady (D.C.) current which when flowing through a given circuit for a given time produces
A The more heat than produced by A.C. when flowing through the same circuit
B The same heat as produced by A.C. when flowing through the same circuit
C The less heat than produced by A.flowing through the same circuit
D None of the above
What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value?
A 0°
B 45°
C 90°
D 180°
একটি AC (Alternating current) প্রবাহের সমীকরণ 1=50 sin (628t) হলে প্রবাহের কম্পাংক কত ?
A 1 H z
B 50 Hz
C 100 Hz
D 150 Hz
When measuring AC (Alternating Current) with a multimeter, it is important to maintain the proper polarity.
A True
B FALSE
C MEM /C
D SYS:
E None of the above
In the case of an unsymmetrical alternating current the average value must always be taken over
A Unsymmetrical part of the wave form
B The quarter cycle
C The half cycle
D The whole cycle
When an alternating current passes through an ohmic resistance the electrical power converted into heat is
A Apparent power
B True power
C Reactive power
D None of the above
A cable carrying alternating current has
A Hysteresis losses only
B Hysteresis and leakage losses only
C Hysteresis, leakage and copper losses only
D Hysteresis, leakage, copper and friction losses
If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because
A varying voltage produces the charging and dicharging currents
B of high peak value
C charging current can flow
D discharge current can flow
Which sources produce alternating current (AC)?
A Solar power plants
B Hydro-electric generators
C Batteries
D All of the above

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