Related Questions

A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory . There are 100 seniors, 150 juniors and 200 sophomres who applied. Each senior's junior's name , 2 times; and each sophomres who applied. Each senior's name is placed in the lottery 3 times; each junior's name ,2 times name, 2 times ; and each sphomore's name , 1 time . What is the probability that a senior's name will be chosen?
A 18
B 38
C 48 
D 28
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
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
The barcode which is used on all types of items, is read by a scanning device directly into the computer. What is the name of this scanning device?
A Laser scanner
B Wand
C OCR
D MICR
E None of the above
Which of the following represents examples of an IT input device, output device and storage device respectively ?
A bar code reader, CD drive, projector
B keyboard, monitor, hard disc
C printer, DVD drive, joystick
D printer, mouse, monitor
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
The frequency of an alternating current is
A The speed with which the alternator runs
B The number of cycles generated in one minute
C The number of waves passing through a point in one second
D The number of electrons passing through a point in one second
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

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