Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | Which statement is correct? |

A. | BJT and MOSFET are current controlled devices [Wrong Answer] |

B. | BJT is voltage controlled and MOSFET is current controlled device [Wrong Answer] |

C. | BJT and MOSFET are voltage controlled devices [Wrong Answer] |

D. | BJT is current controlled and MOSFET is voltage controlled device [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Generally op amp is used in

open loop

closed loop

cascaded loop

either (a) or (c)

⇒ The number of product terms in the minimized sum of product expression obtained through the following K-map, where

*d*, don't c

2

3

4

5

⇒ In the following non-planar graph no.of independent loop equations

8

12

7

5

⇒ A series resonant circuit has parameters 10 ω, 1 H and 0.1 F. It is excited by a voltage

*v*= 100 sin ω

*t*. At resonant frequency, the power dissipated in the circuit is

1000 W

707 W

500 W

414.14 W

⇒ Which of the following is a circularly polarized antenna?

Horn

Dipole

Helical

Pyramidal

⇒ The circuit given below

Band stop filter

Band pass filter

Oscillator circuit

All pass filter

⇒ In case of antenna the lower value of Q indicates

higher bandwidth

lower bandwidth

higher distortion

lower distortion

⇒ Shaft encoder is used to measure

angular position

linear position

linear velocity

linear acceleration

⇒ Which of the following equations satisfy Maxwell's equations?

E

_{x}= E

_{y}= 0, E

_{z}= cos (

*y*-

*ct*)

E

_{x}= E

_{y}= 0, E

_{z}= cos (

*y*-

*ct*)

F

_{y}= cos (

*y*-

*ct*), E

_{x}= E

_{z}= 0

None of these

⇒ A collector collects

electrons from the base in case of N-P-N transistor

electrons from the emitter in case P-N-P transistor

holes from the base in case of N-P-N transistor

holes from the base in case of P-N-P transistor

⇒ Wired AND connection can be used in TTL with totem pole output.

TRUE

FALSE

⇒ It is required that a strain gauge has gauge factor of 100. The proper strain gauge is

constantan strain gauge

nichrome strain gauge

semiconductor strain gauge

alloy strain gauge

⇒ The minor M

*of an*

_{ij}*n*x

*n*matrix is the determinant of (

*n*- 1) x (

*n*- 1) matrix formed by deleting the

*i*th row and

*j*the column of

*n*x

*n*matrix.

TRUE

FALSE

⇒ The minimum gate current which can turn on SCR is called :

trigger current

holding current

junction current

breakover current

⇒ The voltage across the secondary of the transformer in a half wave rectifier with a shunt capacitor filter is 50 volts. The maximum voltage that will occur on the reverse biased diode will be

100 V

88 V

50 V

25 V

⇒ In which frequency range is the noise figure in a transistor minimum

intermediate frequencies

low frequencies

high frequencies

very high frequencies

⇒ Tracking of extra terrestrial objects requires

high transmitting power

very sensitive receiver

fully steerable antenna

all of the above

⇒ An ac tachometer has a drag cup construction so that

rotor inertia is low

rotor body is conducting

rotor is easy to fabricate

both (a) and (b)

⇒ If a number of odd functions are added, the resultant sum is

even function

odd funtion

either even or odd function

mixture of odd amd even functions

⇒ T- FF used as a

transfer Data switch

toggle switch

time delay switch

none

⇒ The amplitude of a random signal uniformly distributed between - 5 V and

0.0333 V

0.05 V

0.0667 V

0.10 V

⇒ If noise margin is high, there is lesser chance of false operation.

TRUE

FALSE

⇒ Consider the following in C

- Arithmetic operations can be performed on ints.
- Arithmetic operations can be performed on floats.
- Arithmetic operation can be performed on chars

All

1 and 2 only

1 and 3 only

2 and 3 only

⇒ Consider the circuit shown below of 2 : 1 MUX is given by the function

*g*=

*ac*+

*bc*

X ⊕ Y

XY + EXY

XE + XY

none of these

X ⊕ Y

XY + EXY

XE + XY

none of these

⇒ In TE and TM modes of rectangular waveguides having propagation in

E

In TE mode E

In TE mode H

In both TE and TM modes both E

⇒ Figure shows an 8-bit LED display. A light circle means that a LED is ON (binary 1) and a dark circle means a LED is OFF (binary 0). What is the decimal equivalent of the binary number displa

100

121

144

172

⇒ The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be

32 mH

16 mH

8 mH

4 mH

⇒ In measurements using CRO, Lissajous patterns are used to

measure magnitude of peak voltage

measure frequency

measure impedance

measure current

⇒ A rectangular waveguide measures 3 x 4.5 cm internally and has a 10 GHz signal propagated in it. Calculate the cut off frequency for dominant mode.

4 GHz

7.5 GHz

5 GHz

10 GHz

⇒ 10's complement of 16

83

84

38

48

⇒ In TE and TM modes of rectangular waveguides having propagation in

*z*directionE

_{z}and H_{z}are both zeroIn TE mode E

_{z}is zero and in TM mode H_{z}is zeroIn TE mode H

_{z}is zero and in TM mode E_{z}is zeroIn both TE and TM modes both E

_{z}and H_{z}are non-zero⇒ Figure shows an 8-bit LED display. A light circle means that a LED is ON (binary 1) and a dark circle means a LED is OFF (binary 0). What is the decimal equivalent of the binary number displa

100

121

144

172

⇒ The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be

32 mH

16 mH

8 mH

4 mH

⇒ In measurements using CRO, Lissajous patterns are used to

measure magnitude of peak voltage

measure frequency

measure impedance

measure current

⇒ A rectangular waveguide measures 3 x 4.5 cm internally and has a 10 GHz signal propagated in it. Calculate the cut off frequency for dominant mode.

4 GHz

7.5 GHz

5 GHz

10 GHz

⇒ 10's complement of 16

_{10}is83

_{10}84

_{10}38

_{10}48

_{10}