Related Questions

One-fifth of the batteries produced by an upstart factory are defective and one -quarter of all batteries produced are rejected by the quality control technician. If one-tenth of the non-defective batteries are rejected by mistake and if all the batteries not rejected are sold, then what percent of the batteries sold by the factory are defective?
A 4%
B 3%
C 6%
D 5%
সিরিজে সংযুক্ত একটি এ্যামিটার এবং একটি অজানা রোধ দুটি একই রকম 1.5 V ব্যাটারীর দুই প্রান্তে সংযুক্ত আছে। যখন ব্যাটারী দুটি সিরিজে সংযুক্ত থাকে তখন এ্যামিটার। amp রিডিং প্রদর্শন করে। আবার ব্যাটারী দুটি সমান্তরালে সংযুক্ত করলে 0.6 amp রিডিং প্রদর্শন করে। ব্যাটারীর আভ্যন্তরিন রোধ কত ? (An ammeter and an unknown resistance are connected in series across two identical batteries of each 1.5 V. The ammeter shows current I amp and 0.6 amp when the batteries are connected in series and parallel, respectively. What is the internal resistance of the battery?)
A 13Ω
B 12Ω
C 1Ω
D 0.1Ω
E 23Ω
Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply?
A Mechanical rectifiers
B Copper oxide rectifiers
C Selenium rectifiers
D Electrolytic rectifiers
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
An automobile financier claims to be lending money at simple interest, but he includes the interest every six months for calculating the principal. If he is charging an interest of 10%, the effective rate of interest becomes---
A 10%
B 10.25%
C 10.75%
D 11%
Studies of fatal automobile accidents reveal that , in the majority of cases in which one occupant of an automobile is killed another survives, it is the passenger , not the driver , who is killed. It is ironic that the innocent passenger should suffer for the driver's carelessness, while the driver often suffers only minor injuries or none at all. Which of the following is an assumption underlying the reasoning in the passage above?
A In most fatal automobile accidents , the driver of a car in which an occupant is killed is at fault .
B Most deaths in fatal automobile accidents are suffered by occupants of cars rather then by pedestrians .
C Auto safety experts should increase their efforts to provide protection for those in the passenger seats of automobiles
D Automobile passengers sometimes play a contributing role in causing auto accidents
The type of organisation preferred for an automobile industry, is
A Line organisation
B Functional organisation
C Line and staff organisation
D Line, staff and functional organisation
Which of the following organisation is preferred in automobile industry?
A Functional organisation
B Line organisation
C Staff organisation
D Line and staff organizations
Battery charging equipment is generally installed
A In well ventilated location
B In clean and dry place
C As near as practical to the battery being charged
D In location having all above features

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