Engineering

ISBT Engineering for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q41.	The resistance of a strip of copper of rectangular cross-section is 2 ohm. A metal of resistivity twice that of copper is coated on its upper surface to a thickness equal to that of copper strip.  The resistance of composite strip will be - ( DRDO Exam. 2013)

1)	6 ohms	2)	4/3 ohms
3)	3/2 ohms	4)	3/4 ohms
5)	None of these

Q42.	What is the current rating of MCB, when it is used for 165 litre refrigirators ?

1)	2 amps	2)	4 amps
3)	1.5 amps	4)	7.5 amps
5)	None of these

Q43.	A  network consists of linear resistors and ideal voltage source. If the value of the resistors are doubled, then voltage across each resistor is -

1)	halved	2)	doubled
3)	increases four lines	4)	not changed
5)	None of these

Q44.	Induction type instruments can be used is -

1)	DC circuit only	2)	AC circuit only
3)	Both AC and DC circuits	4)	Niether AC nor DC circui
5)	None of these

Q45.	What is the power in the given circuit ?

1)	3.92 kW	2)	28.6 W
3)	2.80 W	4)	9.8 W
5)	None of these

Q46.	In the electrical network shown in the figure, the potential difference across 3 resistance will be :

1)	12 V	2)	2.4 V
3)	24 V	4)	36 V
5)	None of these

Q47.	In the circuit shown in figure the reading of ammeter A is -

1)	0.2 A	2)	0.4 A
3)	0.6 A	4)	0.8 A
5)	None of these

Q48.	The flow and timing of data to and from the microprocessor  is regulated by -------- .

1)	control pins	2)	address pins
3)	data pins	4)	power pins
5)	None of these

Q49.	The register which contains the instruction to be executed is called --

1)	instruction register	2)	index register memory address register
3)	memory address register	4)	memory data register
5)	None of these

Q50.	Which of the following is correct that a microprocessor contain ?

1)	most of the control and arithmetic logic functions of a computer	2)	most of the RAM
3)	most of the ROM	4)	peripheral drivers
5)	None of these