Engineering

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

Q91.	A very brief, high voltage spike on an ac power line is called as -

1)	A bleeder	2)	An arc
3)	A transient	4)	An avalanche
5)	A clipped peak

Q92.	Which of the following is not a common form of data transmission ?

1)	Polarization modulation	2)	Frequency modulation
3)	Amplitude modulation	4)	Phase modulation
5)	Pulse modulation

Q93.	A diode can be used as a frequency multiplier because of its -

1)	Junction capacitance	2)	Non linearity
3)	Avalanche voltage	4)	Forward breakover
5)	Charge carrier concentration

Q94.	If 60 J of energy are available for every 15 C of charge, what is the voltage ?

1)	4 V	2)	60 V
3)	15 V	4)	0.25 V

Q95.	The pressure energy goes on changing into kinetic energy in case of -

1)	Pelton turbine	2)	Francis turbine
3)	Kaplan turbine	4)	Francis and Kaplan
5)	None of these

Q96.	The pressure energy goes on changing into kinetic energy in case of -

1)	Pelton turbine	2)	Francis turbine
3)	Kaplan turbine	4)	Francis and Kaplan
5)	None of these

Q97.	A turbine is having specific speed of 400. Then the turbine would be

1)	Kaplan turbine	2)	Francis turbine
3)	Pelton turbine	4)	only 2 & 3
5)	None of the above

Q98.	A turbine is having specific speed as 100. Then the turbine would be -

1)	Kaplan turbine	2)	Francis turbine
3)	Pelton turbine	4)	Steam turbine
5)	None of these

Q99.	The axial flow reaction turbine, in which vanes are fixed to the hub and they are not adjustable, is known as -

1)	Kaplan turbine	2)	Francis turbine
3)	propeller turbine	4)	Pelton turbine
5)	None of these

Q100.

In case reaction turbine, the total head at the inlet of a turbine consists of -

1)	pressure energy and kinetic energy	2)	kinetic energy only
3)	pressure energy only	4)	only 1 & 2
5)	None of the above