tEEEch fun(BEEE QUIZ)

Magnets Used in PMDC motor has which of the following ratings in the range of

• 1W-150W

• 1KW-250KW

• 1KW-150KW

• 1W-250W

A 1-Ph 111V,50Hz Supply connected to a coil with 100 turns of a coil core . Find the Magnitude of Maximum flux in core.

• 20mWb

• 2.5mWb

• 5mWb

• 15mWb

Which of the Following is False

1.The Holes and Electrons move towards from the junction

2.Dynamic Resistance of a Diode is defined as the ratio of change in voltage to the change in current.

3.P-N Junction Diodes are used as voltage Controller

4.Static Resistance is the ratio of DC Current through Diode and DC Voltage across the Diode

• 1&4

• 2&3

• 1&3

• 2&4

If biasing is not done in an amplifier Circuit it results in

• Decrease in base current

• unfaithful amplification

• Excessive Collector Bias

• All of these

Due to which of the following Thermal Run Away Occurs

1.Junction Capacitance is High

2.Emitter is forward biased

3.Collector is reverse biased

4.Transistor is not biased

• 4

• 2&3

• 1

• 3

Which of the following happens when Transistor is not biased Properly?

1)Work efficiency of transistor reduces

2) Distortion in output signal takes place

3) Operating point may shift

4)Transistor parameters will change

• 1,2,3

• 2,3,4

• 1,2,4

• 1,2,3,4

Which properties must be have for fuse elements

i)low melting point

ii)low resistivity

iii)high ohmic losses

• i,ii,iii are correct

• i,iii are correct

• i,ii are correct

• ii,iii are correct

Identify the correct answer

i)Ideal Op-Amp has Infinite Input Resistance

ii)Ideal Op-Amp has finite voltage gain

• Both are correct

• (i) is correct

• (ii) is corect

• Both are incorrect

A non inverting closed loop op amp circuit has a gain factor

• Less than one

• Greater than zero

• zero

• Equal t one

An Ideal Op Amp is an ideal

• Current controlled Current Source

• Current controlled Voltage Source

• Voltage controlled Voltage Source

• Voltage controlled Current Source