Related Questions

STP-তে একটি আদর্শ গ্যাসকে প্রথমে তার প্রাথমিক আয়তনের এক-তৃতীয়াংশে সংকুচিত করা হয়, এবং তারপর প্রসারিত হতে দেওয়া হয় যতক্ষণ না তার চাপ প্রাথমিক চাপের অর্ধেক হয়। উভয় প্রক্রিয়ায় গ্যাসের তাপমাত্রা স্থির থাকে। যদি গ্যাসের প্রাথমিক অভ্যন্তরীণ শক্তি । হয়ে থাকে তাহলে এর চূড়ান্ত অভ্যন্তরীণ শক্তি কত? (An ideal gas at STP is first compressed to one-third of its initial volume and then allowed to expand until its pressure is half the initial pressure. The temperature of the gas remains constant during both the processes. If the initial internal energy of the gas is U, what is its final internal energy?)
A U/3
B U/2
C U
D 2U/3
In constant voltage charging method, the charging current from discharged to fully charged condition
A decreases
B increases
C remains constant
D none of the above
Under normal charging rate, the charging current should be
A 10% of capacity
B 20% of capacity
C 30% of capacity
D 40% of capacity
At a certain bookstore , the regular price of each book is 20 percent less than its list price. If during a sale the price of each book at the store was 15 percent less than its regular price, then the price of a book during the sale was what percent less than its list price ?
A 30%
B 32%
C 35%
D 38%
As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of
A reducing time of charging
B increasing cell capacity
C both (A) and (B)
D avoiding excessive gassing
In ______ system the charging current is intermittently controlled at either a maximum or minimum value
A two rate charge control
B trickle charge
C floating charge
D an equalizing charge
A department store receives a shipment of 1,000 shirts, for which it pays $9,000. The store sells the shirts at a price 80 percent above cost for one month, after which it reduces the price of the shirts to 20 percent above cost. The store sells 75 percent of the shirts during the first month and 50 percent of the remaining shirts afterward. How much gross income did sales of the shirts generate?
A Tk. 10800
B Tk 12150
C Tk 13500
D Tk 14800
The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by
A $$\frac{{\text{C}}}{{\text{R}}}$$
B $$\frac{{\text{1}}}{{{\text{RC}}}}$$
C $${\text{RC}}$$
D $$\frac{{\text{R}}}{{\text{C}}}$$
Over the course of a year , a certain microbrewery increased its beer output by 70 percent, At the same time , it decreased its total working hours by 20 percent , By what percent did this factory increase its output per hour?
A 90%
B 112.5%
C 212.5%
D 50%
In constant-current charging method, the supply voltage from discharged to fully charged condition
A decreases
B increases
C remains constant
D none of the above

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