Related Questions

নয়টি বেলনাকৃতির তার, যাদের প্রতিটির ব্যাস d ও দৈর্ঘ্য L, একত্রে শ্রেণি সজ্জায় সংযুক্ত আছে। সজ্জাটির রোধ যদি একটি L দৈর্ঘ্যের বেলনাকৃতির তারের রোধের সমান হয়, তবে তারটির ব্যাস কত? (Nine cylindrical wires each of diameter d and length L are connected in series. If the resistance of the connection is equal to the resistance of another cylindrical wire of length L, then what is the diameter of the wire?)
A 3d
B 9d
C d3
D d9
In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ___________
A RC + RL
B RC || RL
C RL
D RC
If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is
A RL + RC
B RC || RL
C RL - RC
D RC
The d.c. resistance of a crystal diode is ___________ its a.c. resistance
A the same as
B more than
C less than
D none of the above
Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance?
A P = I2R
B P = IE
C P = E2/R
D I = P/E
E None of the above
“Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen terminals of the load”. The above statement is associated with
A Millman’s theorem
B Thevenin’s theorem
C Superposition theorem
D Maximum power transfer theorem
For a given stress, the ratio of moment of resistance of a beam of square cross-section when placed with its two sides horizontal to the moment of resistance with its diagonal horizontal, is
A $$\frac{1}{2}$$
B 1
C $$\frac{1}{{\sqrt 2 }}$$
D $$\sqrt 2 $$
The critical resistance of the D.C. generator is the resistance of
A Field
B Brushes
C Armature
D Load
The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of
A Iron loss in core
B Skin effect
C Increase in temperature
D Capacitive effect between adjacent coil turns
An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is ___________.
A nG
B (n - 1)G
C $$\frac{{\text{G}}}{{{\text{n}} - 1}}$$
D $$\frac{{\text{G}}}{{\text{n}}}$$

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