Related Questions

Insulation resistance of high voltage circuit breakers is more than
A 1 mega ohms
B 10 mega ohms
C 100 mega ohms
D 500 mega ohms
When demand for a factory's products is high, more money is spent at the factory for safety precautions and machinery maintenance than demand is low. Thus the average number of on-the-job accidents per employee each month should be bower during periods when demand is high than when demand is low and less money is available for safety precautions and machinery maintenance. Which of the following,if true about a factory when demand for its product is high casts the most serious doubt on the conclusion drawn above?
A Its employees ask for higher wages than they do at other times.
B Its management hires new workers but lacks the time to train them properly.
C Its employees are less likely to lose their jobs than they are at other times.
D Its management sponsors a monthly safety award for each division in the factory.
when demand for factory's products is high . more money is spent at the factory for safety precautions and machinery maintenance than when demand is low. thus the average number of on -the-job accidents per employee each month should be lower during perids when demand is high than when demand is low and less money is available for safety precautions and machinery maintenance .when demand for its products is high, casts the most serious doubt on the conclusion drawn above?
A Employees demand for higher wages than they do at other times.
B Authority hires new workers but lacks the time to rain them properly.
C Employees are less likely to lose their jobs than are at other times.
D Authority sponsors a monthly safety award for each division in the factory.
The time of closing the cycle, in modern circuit breakers is
A 0.003 sec
B 0.001 sec
C 0.01 sec
D 0.10 sec
E none of the above
Circuit breakers are essentially
A current carrying contacts called electrodes
B arc extinguishers
C circuits to break the system
D transformers to isolate the two systems
E any of the above
Circuit breakers usually operate under
A transient state of short-circuit current
B sub-transient state of short-circuit current
C steady state of short-circuit current
D after D. C. component has ceased
You are given two statements numbered (i) and (ii) Read both the statements and mark you answer.Statements:i. The police authority has recently caught a group of house breakers. ii. The citizens group in the locality have started night vigil in the area. 
A Statement (i) is the cause and statement (ii) is its effect;
B Statement (ii) is the cause and statement (i) is its effect;
C Both the statements (i) and (ii) are independent causes;
D Both the statements (1) and (ii) are effects of some common causes.
Chip breakers are used to
A Increase tool life
B Remove chips from bed
C Break the chips into short segments
D To minimize heat generation
Assume that the equipments maintenance is is done on consecutive instead of nonconsecutive days but that all other scheduling policies are unchanged . For how many of the six days can it be determined both whether the pool is cleaned and whether the equipments maintenance is done ?
A two
B three
C four
D five
Which of the following topologies has the highest reliability?
A Mesh
B Ring
C Bus
D Star

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